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Finding the Fourth Proportional to 14,197.39, 19,592.76 and 7,909.90

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Solution

The fourth proportional to 14,197.39, 19,592.76 and 7,909.90 is: 10,915.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,197.39 : 19,592.76 = 7,909.90 : x
  2. Step 2: Convert to fraction form
    14,197.39/19,592.76 = 7,909.90/x
  3. Step 3: Cross multiply
    14,197.39x = 19,592.76 × 7,909.90
  4. Step 4: Simplify right side
    14,197.39x = 154,976,772.32
  5. Step 5: Solve for x
    x = 154,976,772.32/14,197.39
  6. Step 6: Final answer
    x = 10,915.86

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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.