Home / 10,691.20-16,041.84-4,119.76

Finding the Fourth Proportional to 10,691.20, 16,041.84 and 4,119.76

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Solution

The fourth proportional to 10,691.20, 16,041.84 and 4,119.76 is: 6,181.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,691.20 : 16,041.84 = 4,119.76 : x
  2. Step 2: Convert to fraction form
    10,691.20/16,041.84 = 4,119.76/x
  3. Step 3: Cross multiply
    10,691.20x = 16,041.84 × 4,119.76
  4. Step 4: Simplify right side
    10,691.20x = 66,088,530.76
  5. Step 5: Solve for x
    x = 66,088,530.76/10,691.20
  6. Step 6: Final answer
    x = 6,181.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.