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Finding the Fourth Proportional to 18,830.34, 28,251.18 and 16,972.74

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Solution

The fourth proportional to 18,830.34, 28,251.18 and 16,972.74 is: 25,464.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.34 : 28,251.18 = 16,972.74 : x
  2. Step 2: Convert to fraction form
    18,830.34/28,251.18 = 16,972.74/x
  3. Step 3: Cross multiply
    18,830.34x = 28,251.18 × 16,972.74
  4. Step 4: Simplify right side
    18,830.34x = 479,499,932.83
  5. Step 5: Solve for x
    x = 479,499,932.83/18,830.34
  6. Step 6: Final answer
    x = 25,464.22

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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.