Home / 21,605.14-29,802.97-12,650.91

Finding the Fourth Proportional to 21,605.14, 29,802.97 and 12,650.91

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Solution

The fourth proportional to 21,605.14, 29,802.97 and 12,650.91 is: 17,451.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605.14 : 29,802.97 = 12,650.91 : x
  2. Step 2: Convert to fraction form
    21,605.14/29,802.97 = 12,650.91/x
  3. Step 3: Cross multiply
    21,605.14x = 29,802.97 × 12,650.91
  4. Step 4: Simplify right side
    21,605.14x = 377,034,691.20
  5. Step 5: Solve for x
    x = 377,034,691.20/21,605.14
  6. Step 6: Final answer
    x = 17,451.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.