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Finding the Fourth Proportional to 14,678.88, 20,250.24 and 8,710.80

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Solution

The fourth proportional to 14,678.88, 20,250.24 and 8,710.80 is: 12,016.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,678.88 : 20,250.24 = 8,710.80 : x
  2. Step 2: Convert to fraction form
    14,678.88/20,250.24 = 8,710.80/x
  3. Step 3: Cross multiply
    14,678.88x = 20,250.24 × 8,710.80
  4. Step 4: Simplify right side
    14,678.88x = 176,395,790.59
  5. Step 5: Solve for x
    x = 176,395,790.59/14,678.88
  6. Step 6: Final answer
    x = 12,016.98

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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.