Home / 21,172.92-29,219.18-11,613.22

Finding the Fourth Proportional to 21,172.92, 29,219.18 and 11,613.22

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Solution

The fourth proportional to 21,172.92, 29,219.18 and 11,613.22 is: 16,026.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.92 : 29,219.18 = 11,613.22 : x
  2. Step 2: Convert to fraction form
    21,172.92/29,219.18 = 11,613.22/x
  3. Step 3: Cross multiply
    21,172.92x = 29,219.18 × 11,613.22
  4. Step 4: Simplify right side
    21,172.92x = 339,328,864.13
  5. Step 5: Solve for x
    x = 339,328,864.13/21,172.92
  6. Step 6: Final answer
    x = 16,026.55

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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.