Home / 28,028,011.88-38,679,160.20-16,428,863.72

Finding the Fourth Proportional to 28,028,011.88, 38,679,160.20 and 16,428,863.72

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Solution

The fourth proportional to 28,028,011.88, 38,679,160.20 and 16,428,863.72 is: 22,672,127.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028,011.88 : 38,679,160.20 = 16,428,863.72 : x
  2. Step 2: Convert to fraction form
    28,028,011.88/38,679,160.20 = 16,428,863.72/x
  3. Step 3: Cross multiply
    28,028,011.88x = 38,679,160.20 × 16,428,863.72
  4. Step 4: Simplify right side
    28,028,011.88x = 635,454,651,729,848
  5. Step 5: Solve for x
    x = 635,454,651,729,848/28,028,011.88
  6. Step 6: Final answer
    x = 22,672,127.24

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.