Home / 20,984,147.10-31,476,220.65-12,460,095.90

Finding the Fourth Proportional to 20,984,147.10, 31,476,220.65 and 12,460,095.90

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Solution

The fourth proportional to 20,984,147.10, 31,476,220.65 and 12,460,095.90 is: 18,690,143.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984,147.10 : 31,476,220.65 = 12,460,095.90 : x
  2. Step 2: Convert to fraction form
    20,984,147.10/31,476,220.65 = 12,460,095.90/x
  3. Step 3: Cross multiply
    20,984,147.10x = 31,476,220.65 × 12,460,095.90
  4. Step 4: Simplify right side
    20,984,147.10x = 392,196,727,868,560.31
  5. Step 5: Solve for x
    x = 392,196,727,868,560.31/20,984,147.10
  6. Step 6: Final answer
    x = 18,690,143.85

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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.