Home / 12,454,637.70-18,681,956.55-7,415,789.70

Finding the Fourth Proportional to 12,454,637.70, 18,681,956.55 and 7,415,789.70

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Solution

The fourth proportional to 12,454,637.70, 18,681,956.55 and 7,415,789.70 is: 11,123,684.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,454,637.70 : 18,681,956.55 = 7,415,789.70 : x
  2. Step 2: Convert to fraction form
    12,454,637.70/18,681,956.55 = 7,415,789.70/x
  3. Step 3: Cross multiply
    12,454,637.70x = 18,681,956.55 × 7,415,789.70
  4. Step 4: Simplify right side
    12,454,637.70x = 138,541,460,959,337.55
  5. Step 5: Solve for x
    x = 138,541,460,959,337.55/12,454,637.70
  6. Step 6: Final answer
    x = 11,123,684.55

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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.