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Finding the Fourth Proportional to 18,810.57, 28,251.02 and 16,559.91

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Solution

The fourth proportional to 18,810.57, 28,251.02 and 16,559.91 is: 24,870.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.57 : 28,251.02 = 16,559.91 : x
  2. Step 2: Convert to fraction form
    18,810.57/28,251.02 = 16,559.91/x
  3. Step 3: Cross multiply
    18,810.57x = 28,251.02 × 16,559.91
  4. Step 4: Simplify right side
    18,810.57x = 467,834,265.81
  5. Step 5: Solve for x
    x = 467,834,265.81/18,810.57
  6. Step 6: Final answer
    x = 24,870.82

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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.