Home / 21,710.52-29,966.40-12,760.89

Finding the Fourth Proportional to 21,710.52, 29,966.40 and 12,760.89

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Solution

The fourth proportional to 21,710.52, 29,966.40 and 12,760.89 is: 17,613.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,710.52 : 29,966.40 = 12,760.89 : x
  2. Step 2: Convert to fraction form
    21,710.52/29,966.40 = 12,760.89/x
  3. Step 3: Cross multiply
    21,710.52x = 29,966.40 × 12,760.89
  4. Step 4: Simplify right side
    21,710.52x = 382,397,934.10
  5. Step 5: Solve for x
    x = 382,397,934.10/21,710.52
  6. Step 6: Final answer
    x = 17,613.49

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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.