Home / 15,439.46-23,140.21-8,781.54

Finding the Fourth Proportional to 15,439.46, 23,140.21 and 8,781.54

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Solution

The fourth proportional to 15,439.46, 23,140.21 and 8,781.54 is: 13,161.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.46 : 23,140.21 = 8,781.54 : x
  2. Step 2: Convert to fraction form
    15,439.46/23,140.21 = 8,781.54/x
  3. Step 3: Cross multiply
    15,439.46x = 23,140.21 × 8,781.54
  4. Step 4: Simplify right side
    15,439.46x = 203,206,679.72
  5. Step 5: Solve for x
    x = 203,206,679.72/15,439.46
  6. Step 6: Final answer
    x = 13,161.51

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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.