Home / 38,618.64-57,890.90-12,306.20

Finding the Fourth Proportional to 38,618.64, 57,890.90 and 12,306.20

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Solution

The fourth proportional to 38,618.64, 57,890.90 and 12,306.20 is: 18,447.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,618.64 : 57,890.90 = 12,306.20 : x
  2. Step 2: Convert to fraction form
    38,618.64/57,890.90 = 12,306.20/x
  3. Step 3: Cross multiply
    38,618.64x = 57,890.90 × 12,306.20
  4. Step 4: Simplify right side
    38,618.64x = 712,416,734.89
  5. Step 5: Solve for x
    x = 712,416,734.89/38,618.64
  6. Step 6: Final answer
    x = 18,447.48

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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.