Home / 10,975.46-15,148.98-6,781.28

Finding the Fourth Proportional to 10,975.46, 15,148.98 and 6,781.28

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Solution

The fourth proportional to 10,975.46, 15,148.98 and 6,781.28 is: 9,359.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,975.46 : 15,148.98 = 6,781.28 : x
  2. Step 2: Convert to fraction form
    10,975.46/15,148.98 = 6,781.28/x
  3. Step 3: Cross multiply
    10,975.46x = 15,148.98 × 6,781.28
  4. Step 4: Simplify right side
    10,975.46x = 102,729,475.09
  5. Step 5: Solve for x
    x = 102,729,475.09/10,975.46
  6. Step 6: Final answer
    x = 9,359.92

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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.