Home / 21,024.04-29,138.42-20,630.38

Finding the Fourth Proportional to 21,024.04, 29,138.42 and 20,630.38

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Solution

The fourth proportional to 21,024.04, 29,138.42 and 20,630.38 is: 28,592.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024.04 : 29,138.42 = 20,630.38 : x
  2. Step 2: Convert to fraction form
    21,024.04/29,138.42 = 20,630.38/x
  3. Step 3: Cross multiply
    21,024.04x = 29,138.42 × 20,630.38
  4. Step 4: Simplify right side
    21,024.04x = 601,136,677.20
  5. Step 5: Solve for x
    x = 601,136,677.20/21,024.04
  6. Step 6: Final answer
    x = 28,592.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.