Home / 20,257.20-27,951.24-15,402.06

Finding the Fourth Proportional to 20,257.20, 27,951.24 and 15,402.06

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Solution

The fourth proportional to 20,257.20, 27,951.24 and 15,402.06 is: 21,252.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,257.20 : 27,951.24 = 15,402.06 : x
  2. Step 2: Convert to fraction form
    20,257.20/27,951.24 = 15,402.06/x
  3. Step 3: Cross multiply
    20,257.20x = 27,951.24 × 15,402.06
  4. Step 4: Simplify right side
    20,257.20x = 430,506,675.55
  5. Step 5: Solve for x
    x = 430,506,675.55/20,257.20
  6. Step 6: Final answer
    x = 21,252.03

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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.