Home / 20,924.52-31,386.82-5,129.62

Finding the Fourth Proportional to 20,924.52, 31,386.82 and 5,129.62

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Solution

The fourth proportional to 20,924.52, 31,386.82 and 5,129.62 is: 7,694.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.52 : 31,386.82 = 5,129.62 : x
  2. Step 2: Convert to fraction form
    20,924.52/31,386.82 = 5,129.62/x
  3. Step 3: Cross multiply
    20,924.52x = 31,386.82 × 5,129.62
  4. Step 4: Simplify right side
    20,924.52x = 161,002,459.61
  5. Step 5: Solve for x
    x = 161,002,459.61/20,924.52
  6. Step 6: Final answer
    x = 7,694.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.