Home / 15,581.90-23,318.12-13,416.78

Finding the Fourth Proportional to 15,581.90, 23,318.12 and 13,416.78

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Solution

The fourth proportional to 15,581.90, 23,318.12 and 13,416.78 is: 20,078.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.90 : 23,318.12 = 13,416.78 : x
  2. Step 2: Convert to fraction form
    15,581.90/23,318.12 = 13,416.78/x
  3. Step 3: Cross multiply
    15,581.90x = 23,318.12 × 13,416.78
  4. Step 4: Simplify right side
    15,581.90x = 312,854,086.05
  5. Step 5: Solve for x
    x = 312,854,086.05/15,581.90
  6. Step 6: Final answer
    x = 20,078.04

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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.