Home / 20,515.25-30,778.07-5,724.17

Finding the Fourth Proportional to 20,515.25, 30,778.07 and 5,724.17

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Solution

The fourth proportional to 20,515.25, 30,778.07 and 5,724.17 is: 8,587.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.25 : 30,778.07 = 5,724.17 : x
  2. Step 2: Convert to fraction form
    20,515.25/30,778.07 = 5,724.17/x
  3. Step 3: Cross multiply
    20,515.25x = 30,778.07 × 5,724.17
  4. Step 4: Simplify right side
    20,515.25x = 176,178,837.86
  5. Step 5: Solve for x
    x = 176,178,837.86/20,515.25
  6. Step 6: Final answer
    x = 8,587.70

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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.