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Finding the Fourth Proportional to 11,775.50, 16,250.20 and 6,470.42

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Solution

The fourth proportional to 11,775.50, 16,250.20 and 6,470.42 is: 8,929.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,775.50 : 16,250.20 = 6,470.42 : x
  2. Step 2: Convert to fraction form
    11,775.50/16,250.20 = 6,470.42/x
  3. Step 3: Cross multiply
    11,775.50x = 16,250.20 × 6,470.42
  4. Step 4: Simplify right side
    11,775.50x = 105,145,619.08
  5. Step 5: Solve for x
    x = 105,145,619.08/11,775.50
  6. Step 6: Final answer
    x = 8,929.19

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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.