Home / 20,515.56-30,778.52-5,724.47

Finding the Fourth Proportional to 20,515.56, 30,778.52 and 5,724.47

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Solution

The fourth proportional to 20,515.56, 30,778.52 and 5,724.47 is: 8,588.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.56 : 30,778.52 = 5,724.47 : x
  2. Step 2: Convert to fraction form
    20,515.56/30,778.52 = 5,724.47/x
  3. Step 3: Cross multiply
    20,515.56x = 30,778.52 × 5,724.47
  4. Step 4: Simplify right side
    20,515.56x = 176,190,560.49
  5. Step 5: Solve for x
    x = 176,190,560.49/20,515.56
  6. Step 6: Final answer
    x = 8,588.14

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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.