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Finding the Fourth Proportional to 14,945.50, 20,624.79 and 8,661.52

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Solution

The fourth proportional to 14,945.50, 20,624.79 and 8,661.52 is: 11,952.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,945.50 : 20,624.79 = 8,661.52 : x
  2. Step 2: Convert to fraction form
    14,945.50/20,624.79 = 8,661.52/x
  3. Step 3: Cross multiply
    14,945.50x = 20,624.79 × 8,661.52
  4. Step 4: Simplify right side
    14,945.50x = 178,642,031.08
  5. Step 5: Solve for x
    x = 178,642,031.08/14,945.50
  6. Step 6: Final answer
    x = 11,952.90

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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.