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Finding the Fourth Proportional to 14,474.28, 19,960.18 and 8,809.80

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Solution

The fourth proportional to 14,474.28, 19,960.18 and 8,809.80 is: 12,148.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,474.28 : 19,960.18 = 8,809.80 : x
  2. Step 2: Convert to fraction form
    14,474.28/19,960.18 = 8,809.80/x
  3. Step 3: Cross multiply
    14,474.28x = 19,960.18 × 8,809.80
  4. Step 4: Simplify right side
    14,474.28x = 175,845,193.76
  5. Step 5: Solve for x
    x = 175,845,193.76/14,474.28
  6. Step 6: Final answer
    x = 12,148.80

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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.