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Finding the Fourth Proportional to 20,837.70, 29,231.10 and 20,837.70

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Solution

The fourth proportional to 20,837.70, 29,231.10 and 20,837.70 is: 29,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.70 : 29,231.10 = 20,837.70 : x
  2. Step 2: Convert to fraction form
    20,837.70/29,231.10 = 20,837.70/x
  3. Step 3: Cross multiply
    20,837.70x = 29,231.10 × 20,837.70
  4. Step 4: Simplify right side
    20,837.70x = 609,108,892.47
  5. Step 5: Solve for x
    x = 609,108,892.47/20,837.70
  6. Step 6: Final answer
    x = 29,231.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.