Home / 21,168,111.70-31,752,167.55-13,609,839.70

Finding the Fourth Proportional to 21,168,111.70, 31,752,167.55 and 13,609,839.70

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Solution

The fourth proportional to 21,168,111.70, 31,752,167.55 and 13,609,839.70 is: 20,414,759.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168,111.70 : 31,752,167.55 = 13,609,839.70 : x
  2. Step 2: Convert to fraction form
    21,168,111.70/31,752,167.55 = 13,609,839.70/x
  3. Step 3: Cross multiply
    21,168,111.70x = 31,752,167.55 × 13,609,839.70
  4. Step 4: Simplify right side
    21,168,111.70x = 432,141,910,483,041.75
  5. Step 5: Solve for x
    x = 432,141,910,483,041.75/21,168,111.70
  6. Step 6: Final answer
    x = 20,414,759.55

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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.