Home / 19,834.90-29,752.32-8,139.88

Finding the Fourth Proportional to 19,834.90, 29,752.32 and 8,139.88

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Solution

The fourth proportional to 19,834.90, 29,752.32 and 8,139.88 is: 12,209.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,834.90 : 29,752.32 = 8,139.88 : x
  2. Step 2: Convert to fraction form
    19,834.90/29,752.32 = 8,139.88/x
  3. Step 3: Cross multiply
    19,834.90x = 29,752.32 × 8,139.88
  4. Step 4: Simplify right side
    19,834.90x = 242,180,314.52
  5. Step 5: Solve for x
    x = 242,180,314.52/19,834.90
  6. Step 6: Final answer
    x = 12,209.81

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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.