Home / 10,079.28-15,087.96-9,128.88

Finding the Fourth Proportional to 10,079.28, 15,087.96 and 9,128.88

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Solution

The fourth proportional to 10,079.28, 15,087.96 and 9,128.88 is: 13,665.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,079.28 : 15,087.96 = 9,128.88 : x
  2. Step 2: Convert to fraction form
    10,079.28/15,087.96 = 9,128.88/x
  3. Step 3: Cross multiply
    10,079.28x = 15,087.96 × 9,128.88
  4. Step 4: Simplify right side
    10,079.28x = 137,736,176.28
  5. Step 5: Solve for x
    x = 137,736,176.28/10,079.28
  6. Step 6: Final answer
    x = 13,665.28

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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.