Home / 10,001.28-15,001.92-6,541.44

Finding the Fourth Proportional to 10,001.28, 15,001.92 and 6,541.44

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Solution

The fourth proportional to 10,001.28, 15,001.92 and 6,541.44 is: 9,812.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,001.28 : 15,001.92 = 6,541.44 : x
  2. Step 2: Convert to fraction form
    10,001.28/15,001.92 = 6,541.44/x
  3. Step 3: Cross multiply
    10,001.28x = 15,001.92 × 6,541.44
  4. Step 4: Simplify right side
    10,001.28x = 98,134,159.56
  5. Step 5: Solve for x
    x = 98,134,159.56/10,001.28
  6. Step 6: Final answer
    x = 9,812.16

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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.