Home / 21,168,112.20-31,752,168.30-13,609,840.20

Finding the Fourth Proportional to 21,168,112.20, 31,752,168.30 and 13,609,840.20

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Solution

The fourth proportional to 21,168,112.20, 31,752,168.30 and 13,609,840.20 is: 20,414,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168,112.20 : 31,752,168.30 = 13,609,840.20 : x
  2. Step 2: Convert to fraction form
    21,168,112.20/31,752,168.30 = 13,609,840.20/x
  3. Step 3: Cross multiply
    21,168,112.20x = 31,752,168.30 × 13,609,840.20
  4. Step 4: Simplify right side
    21,168,112.20x = 432,141,936,566,505.62
  5. Step 5: Solve for x
    x = 432,141,936,566,505.62/21,168,112.20
  6. Step 6: Final answer
    x = 20,414,760.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.