Home / 20,984,132.10-31,476,198.15-12,460,080.90

Finding the Fourth Proportional to 20,984,132.10, 31,476,198.15 and 12,460,080.90

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Solution

The fourth proportional to 20,984,132.10, 31,476,198.15 and 12,460,080.90 is: 18,690,121.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984,132.10 : 31,476,198.15 = 12,460,080.90 : x
  2. Step 2: Convert to fraction form
    20,984,132.10/31,476,198.15 = 12,460,080.90/x
  3. Step 3: Cross multiply
    20,984,132.10x = 31,476,198.15 × 12,460,080.90
  4. Step 4: Simplify right side
    20,984,132.10x = 392,195,975,373,430.31
  5. Step 5: Solve for x
    x = 392,195,975,373,430.31/20,984,132.10
  6. Step 6: Final answer
    x = 18,690,121.35

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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.