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Finding the Fourth Proportional to 21,710.33, 29,963.47 and 13,753.29

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Solution

The fourth proportional to 21,710.33, 29,963.47 and 13,753.29 is: 18,981.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,710.33 : 29,963.47 = 13,753.29 : x
  2. Step 2: Convert to fraction form
    21,710.33/29,963.47 = 13,753.29/x
  3. Step 3: Cross multiply
    21,710.33x = 29,963.47 × 13,753.29
  4. Step 4: Simplify right side
    21,710.33x = 412,096,292.32
  5. Step 5: Solve for x
    x = 412,096,292.32/21,710.33
  6. Step 6: Final answer
    x = 18,981.58

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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.