Home / 20,960.46-31,412.91-15,387.75

Finding the Fourth Proportional to 20,960.46, 31,412.91 and 15,387.75

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Solution

The fourth proportional to 20,960.46, 31,412.91 and 15,387.75 is: 23,061.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.46 : 31,412.91 = 15,387.75 : x
  2. Step 2: Convert to fraction form
    20,960.46/31,412.91 = 15,387.75/x
  3. Step 3: Cross multiply
    20,960.46x = 31,412.91 × 15,387.75
  4. Step 4: Simplify right side
    20,960.46x = 483,374,005.85
  5. Step 5: Solve for x
    x = 483,374,005.85/20,960.46
  6. Step 6: Final answer
    x = 23,061.23

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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.