Home / 28,213.03-38,951.70-18,158.95

Finding the Fourth Proportional to 28,213.03, 38,951.70 and 18,158.95

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Solution

The fourth proportional to 28,213.03, 38,951.70 and 18,158.95 is: 25,070.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.03 : 38,951.70 = 18,158.95 : x
  2. Step 2: Convert to fraction form
    28,213.03/38,951.70 = 18,158.95/x
  3. Step 3: Cross multiply
    28,213.03x = 38,951.70 × 18,158.95
  4. Step 4: Simplify right side
    28,213.03x = 707,321,972.72
  5. Step 5: Solve for x
    x = 707,321,972.72/28,213.03
  6. Step 6: Final answer
    x = 25,070.76

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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.