Home / 11,617.12-16,031.28-8,486.56

Finding the Fourth Proportional to 11,617.12, 16,031.28 and 8,486.56

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Solution

The fourth proportional to 11,617.12, 16,031.28 and 8,486.56 is: 11,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,617.12 : 16,031.28 = 8,486.56 : x
  2. Step 2: Convert to fraction form
    11,617.12/16,031.28 = 8,486.56/x
  3. Step 3: Cross multiply
    11,617.12x = 16,031.28 × 8,486.56
  4. Step 4: Simplify right side
    11,617.12x = 136,050,419.60
  5. Step 5: Solve for x
    x = 136,050,419.60/11,617.12
  6. Step 6: Final answer
    x = 11,711.20

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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.