Home / 11,397.17-15,740.22-8,679.32

Finding the Fourth Proportional to 11,397.17, 15,740.22 and 8,679.32

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Solution

The fourth proportional to 11,397.17, 15,740.22 and 8,679.32 is: 11,986.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,397.17 : 15,740.22 = 8,679.32 : x
  2. Step 2: Convert to fraction form
    11,397.17/15,740.22 = 8,679.32/x
  3. Step 3: Cross multiply
    11,397.17x = 15,740.22 × 8,679.32
  4. Step 4: Simplify right side
    11,397.17x = 136,614,419.12
  5. Step 5: Solve for x
    x = 136,614,419.12/11,397.17
  6. Step 6: Final answer
    x = 11,986.69

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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.