Home / 11,769.95-16,253.08-8,780.60

Finding the Fourth Proportional to 11,769.95, 16,253.08 and 8,780.60

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Solution

The fourth proportional to 11,769.95, 16,253.08 and 8,780.60 is: 12,125.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,769.95 : 16,253.08 = 8,780.60 : x
  2. Step 2: Convert to fraction form
    11,769.95/16,253.08 = 8,780.60/x
  3. Step 3: Cross multiply
    11,769.95x = 16,253.08 × 8,780.60
  4. Step 4: Simplify right side
    11,769.95x = 142,711,691.03
  5. Step 5: Solve for x
    x = 142,711,691.03/11,769.95
  6. Step 6: Final answer
    x = 12,125.09

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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.