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Finding the Fourth Proportional to 25,903.80, 38,826.90 and 11,110.20

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Solution

The fourth proportional to 25,903.80, 38,826.90 and 11,110.20 is: 16,652.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,903.80 : 38,826.90 = 11,110.20 : x
  2. Step 2: Convert to fraction form
    25,903.80/38,826.90 = 11,110.20/x
  3. Step 3: Cross multiply
    25,903.80x = 38,826.90 × 11,110.20
  4. Step 4: Simplify right side
    25,903.80x = 431,374,624.38
  5. Step 5: Solve for x
    x = 431,374,624.38/25,903.80
  6. Step 6: Final answer
    x = 16,652.95

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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.