Home / 21,192.68-29,239.14-12,239

Finding the Fourth Proportional to 21,192.68, 29,239.14 and 12,239

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Solution

The fourth proportional to 21,192.68, 29,239.14 and 12,239 is: 16,885.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.68 : 29,239.14 = 12,239 : x
  2. Step 2: Convert to fraction form
    21,192.68/29,239.14 = 12,239/x
  3. Step 3: Cross multiply
    21,192.68x = 29,239.14 × 12,239
  4. Step 4: Simplify right side
    21,192.68x = 357,857,834.46
  5. Step 5: Solve for x
    x = 357,857,834.46/21,192.68
  6. Step 6: Final answer
    x = 16,885.92

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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.