Home / 38,426.12-57,646.20-12,138.20

Finding the Fourth Proportional to 38,426.12, 57,646.20 and 12,138.20

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Solution

The fourth proportional to 38,426.12, 57,646.20 and 12,138.20 is: 18,209.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,426.12 : 57,646.20 = 12,138.20 : x
  2. Step 2: Convert to fraction form
    38,426.12/57,646.20 = 12,138.20/x
  3. Step 3: Cross multiply
    38,426.12x = 57,646.20 × 12,138.20
  4. Step 4: Simplify right side
    38,426.12x = 699,721,104.84
  5. Step 5: Solve for x
    x = 699,721,104.84/38,426.12
  6. Step 6: Final answer
    x = 18,209.52

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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.