Home / 18,885,877.10-28,328,815.65-13,146,314.30

Finding the Fourth Proportional to 18,885,877.10, 28,328,815.65 and 13,146,314.30

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Solution

The fourth proportional to 18,885,877.10, 28,328,815.65 and 13,146,314.30 is: 19,719,471.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885,877.10 : 28,328,815.65 = 13,146,314.30 : x
  2. Step 2: Convert to fraction form
    18,885,877.10/28,328,815.65 = 13,146,314.30/x
  3. Step 3: Cross multiply
    18,885,877.10x = 28,328,815.65 × 13,146,314.30
  4. Step 4: Simplify right side
    18,885,877.10x = 372,419,514,281,658.81
  5. Step 5: Solve for x
    x = 372,419,514,281,658.81/18,885,877.10
  6. Step 6: Final answer
    x = 19,719,471.45

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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.