Home / 21,288,068.20-31,932,102.30-18,768,644.20

Finding the Fourth Proportional to 21,288,068.20, 31,932,102.30 and 18,768,644.20

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Solution

The fourth proportional to 21,288,068.20, 31,932,102.30 and 18,768,644.20 is: 28,152,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288,068.20 : 31,932,102.30 = 18,768,644.20 : x
  2. Step 2: Convert to fraction form
    21,288,068.20/31,932,102.30 = 18,768,644.20/x
  3. Step 3: Cross multiply
    21,288,068.20x = 31,932,102.30 × 18,768,644.20
  4. Step 4: Simplify right side
    21,288,068.20x = 599,322,266,626,701.62
  5. Step 5: Solve for x
    x = 599,322,266,626,701.62/21,288,068.20
  6. Step 6: Final answer
    x = 28,152,966.30

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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.