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Finding the Fourth Proportional to 14,951.68, 20,610.48 and 9,639.70

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Solution

The fourth proportional to 14,951.68, 20,610.48 and 9,639.70 is: 13,288.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,951.68 : 20,610.48 = 9,639.70 : x
  2. Step 2: Convert to fraction form
    14,951.68/20,610.48 = 9,639.70/x
  3. Step 3: Cross multiply
    14,951.68x = 20,610.48 × 9,639.70
  4. Step 4: Simplify right side
    14,951.68x = 198,678,851.74
  5. Step 5: Solve for x
    x = 198,678,851.74/14,951.68
  6. Step 6: Final answer
    x = 13,288.06

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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.