Home / 10,955.76-15,115.10-6,708.74

Finding the Fourth Proportional to 10,955.76, 15,115.10 and 6,708.74

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Solution

The fourth proportional to 10,955.76, 15,115.10 and 6,708.74 is: 9,255.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.76 : 15,115.10 = 6,708.74 : x
  2. Step 2: Convert to fraction form
    10,955.76/15,115.10 = 6,708.74/x
  3. Step 3: Cross multiply
    10,955.76x = 15,115.10 × 6,708.74
  4. Step 4: Simplify right side
    10,955.76x = 101,403,275.97
  5. Step 5: Solve for x
    x = 101,403,275.97/10,955.76
  6. Step 6: Final answer
    x = 9,255.70

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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.