Home / 38,881.80-58,331.16-12,589.20

Finding the Fourth Proportional to 38,881.80, 58,331.16 and 12,589.20

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Solution

The fourth proportional to 38,881.80, 58,331.16 and 12,589.20 is: 18,886.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,881.80 : 58,331.16 = 12,589.20 : x
  2. Step 2: Convert to fraction form
    38,881.80/58,331.16 = 12,589.20/x
  3. Step 3: Cross multiply
    38,881.80x = 58,331.16 × 12,589.20
  4. Step 4: Simplify right side
    38,881.80x = 734,342,639.47
  5. Step 5: Solve for x
    x = 734,342,639.47/38,881.80
  6. Step 6: Final answer
    x = 18,886.54

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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.