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Finding the Fourth Proportional to 8,959.56, 13,422.12 and 6,959.76

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Solution

The fourth proportional to 8,959.56, 13,422.12 and 6,959.76 is: 10,426.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.56 : 13,422.12 = 6,959.76 : x
  2. Step 2: Convert to fraction form
    8,959.56/13,422.12 = 6,959.76/x
  3. Step 3: Cross multiply
    8,959.56x = 13,422.12 × 6,959.76
  4. Step 4: Simplify right side
    8,959.56x = 93,414,733.89
  5. Step 5: Solve for x
    x = 93,414,733.89/8,959.56
  6. Step 6: Final answer
    x = 10,426.26

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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.