Home / 28,014.91-38,660.57-15,439.66

Finding the Fourth Proportional to 28,014.91, 38,660.57 and 15,439.66

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Solution

The fourth proportional to 28,014.91, 38,660.57 and 15,439.66 is: 21,306.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,014.91 : 38,660.57 = 15,439.66 : x
  2. Step 2: Convert to fraction form
    28,014.91/38,660.57 = 15,439.66/x
  3. Step 3: Cross multiply
    28,014.91x = 38,660.57 × 15,439.66
  4. Step 4: Simplify right side
    28,014.91x = 596,905,862.90
  5. Step 5: Solve for x
    x = 596,905,862.90/28,014.91
  6. Step 6: Final answer
    x = 21,306.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.