Home / 20,502.18-30,754.09-5,712.39

Finding the Fourth Proportional to 20,502.18, 30,754.09 and 5,712.39

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Solution

The fourth proportional to 20,502.18, 30,754.09 and 5,712.39 is: 8,568.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.18 : 30,754.09 = 5,712.39 : x
  2. Step 2: Convert to fraction form
    20,502.18/30,754.09 = 5,712.39/x
  3. Step 3: Cross multiply
    20,502.18x = 30,754.09 × 5,712.39
  4. Step 4: Simplify right side
    20,502.18x = 175,679,356.18
  5. Step 5: Solve for x
    x = 175,679,356.18/20,502.18
  6. Step 6: Final answer
    x = 8,568.81

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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.