Home / 11,397.26-15,728.10-6,680.63

Finding the Fourth Proportional to 11,397.26, 15,728.10 and 6,680.63

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Solution

The fourth proportional to 11,397.26, 15,728.10 and 6,680.63 is: 9,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,397.26 : 15,728.10 = 6,680.63 : x
  2. Step 2: Convert to fraction form
    11,397.26/15,728.10 = 6,680.63/x
  3. Step 3: Cross multiply
    11,397.26x = 15,728.10 × 6,680.63
  4. Step 4: Simplify right side
    11,397.26x = 105,073,616.70
  5. Step 5: Solve for x
    x = 105,073,616.70/11,397.26
  6. Step 6: Final answer
    x = 9,219.20

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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.