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Finding the Fourth Proportional to 21,608.34, 29,817.36 and 15,946.17

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Solution

The fourth proportional to 21,608.34, 29,817.36 and 15,946.17 is: 22,004.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,608.34 : 29,817.36 = 15,946.17 : x
  2. Step 2: Convert to fraction form
    21,608.34/29,817.36 = 15,946.17/x
  3. Step 3: Cross multiply
    21,608.34x = 29,817.36 × 15,946.17
  4. Step 4: Simplify right side
    21,608.34x = 475,472,691.51
  5. Step 5: Solve for x
    x = 475,472,691.51/21,608.34
  6. Step 6: Final answer
    x = 22,004.13

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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.