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Finding the Fourth Proportional to 18,062.48, 24,870.84 and 15,811.76

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Solution

The fourth proportional to 18,062.48, 24,870.84 and 15,811.76 is: 21,771.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,062.48 : 24,870.84 = 15,811.76 : x
  2. Step 2: Convert to fraction form
    18,062.48/24,870.84 = 15,811.76/x
  3. Step 3: Cross multiply
    18,062.48x = 24,870.84 × 15,811.76
  4. Step 4: Simplify right side
    18,062.48x = 393,251,753.08
  5. Step 5: Solve for x
    x = 393,251,753.08/18,062.48
  6. Step 6: Final answer
    x = 21,771.75

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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.