Home / 20,854.62-31,280.85-5,272.38

Finding the Fourth Proportional to 20,854.62, 31,280.85 and 5,272.38

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Solution

The fourth proportional to 20,854.62, 31,280.85 and 5,272.38 is: 7,908.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.62 : 31,280.85 = 5,272.38 : x
  2. Step 2: Convert to fraction form
    20,854.62/31,280.85 = 5,272.38/x
  3. Step 3: Cross multiply
    20,854.62x = 31,280.85 × 5,272.38
  4. Step 4: Simplify right side
    20,854.62x = 164,924,527.92
  5. Step 5: Solve for x
    x = 164,924,527.92/20,854.62
  6. Step 6: Final answer
    x = 7,908.30

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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.