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Finding the Fourth Proportional to 16,991,614.80, 25,445,431.80 and 11,280,920.40

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Solution

The fourth proportional to 16,991,614.80, 25,445,431.80 and 11,280,920.40 is: 16,893,502.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,991,614.80 : 25,445,431.80 = 11,280,920.40 : x
  2. Step 2: Convert to fraction form
    16,991,614.80/25,445,431.80 = 11,280,920.40/x
  3. Step 3: Cross multiply
    16,991,614.80x = 25,445,431.80 × 11,280,920.40
  4. Step 4: Simplify right side
    16,991,614.80x = 287,047,890,679,428.75
  5. Step 5: Solve for x
    x = 287,047,890,679,428.75/16,991,614.80
  6. Step 6: Final answer
    x = 16,893,502.71

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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.