Home / 20,301.28-30,451.86-7,152.16

Finding the Fourth Proportional to 20,301.28, 30,451.86 and 7,152.16

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Solution

The fourth proportional to 20,301.28, 30,451.86 and 7,152.16 is: 10,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.28 : 30,451.86 = 7,152.16 : x
  2. Step 2: Convert to fraction form
    20,301.28/30,451.86 = 7,152.16/x
  3. Step 3: Cross multiply
    20,301.28x = 30,451.86 × 7,152.16
  4. Step 4: Simplify right side
    20,301.28x = 217,796,575.02
  5. Step 5: Solve for x
    x = 217,796,575.02/20,301.28
  6. Step 6: Final answer
    x = 10,728.22

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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.