Home / 38,280.94-57,421.41-11,987.73

Finding the Fourth Proportional to 38,280.94, 57,421.41 and 11,987.73

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Solution

The fourth proportional to 38,280.94, 57,421.41 and 11,987.73 is: 17,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,280.94 : 57,421.41 = 11,987.73 : x
  2. Step 2: Convert to fraction form
    38,280.94/57,421.41 = 11,987.73/x
  3. Step 3: Cross multiply
    38,280.94x = 57,421.41 × 11,987.73
  4. Step 4: Simplify right side
    38,280.94x = 688,352,359.30
  5. Step 5: Solve for x
    x = 688,352,359.30/38,280.94
  6. Step 6: Final answer
    x = 17,981.60

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Similar ratio
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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.