Home / 13,937.40-20,906.10-12,734.55

Finding the Fourth Proportional to 13,937.40, 20,906.10 and 12,734.55

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Solution

The fourth proportional to 13,937.40, 20,906.10 and 12,734.55 is: 19,101.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,937.40 : 20,906.10 = 12,734.55 : x
  2. Step 2: Convert to fraction form
    13,937.40/20,906.10 = 12,734.55/x
  3. Step 3: Cross multiply
    13,937.40x = 20,906.10 × 12,734.55
  4. Step 4: Simplify right side
    13,937.40x = 266,229,775.76
  5. Step 5: Solve for x
    x = 266,229,775.76/13,937.40
  6. Step 6: Final answer
    x = 19,101.83

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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.