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Finding the Fourth Proportional to 16,909.80, 25,374.80 and 9,018.18

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Solution

The fourth proportional to 16,909.80, 25,374.80 and 9,018.18 is: 13,532.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,909.80 : 25,374.80 = 9,018.18 : x
  2. Step 2: Convert to fraction form
    16,909.80/25,374.80 = 9,018.18/x
  3. Step 3: Cross multiply
    16,909.80x = 25,374.80 × 9,018.18
  4. Step 4: Simplify right side
    16,909.80x = 228,834,468.77
  5. Step 5: Solve for x
    x = 228,834,468.77/16,909.80
  6. Step 6: Final answer
    x = 13,532.65

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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.