Home / 20,545.72-30,815.53-5,753.71

Finding the Fourth Proportional to 20,545.72, 30,815.53 and 5,753.71

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Solution

The fourth proportional to 20,545.72, 30,815.53 and 5,753.71 is: 8,629.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.72 : 30,815.53 = 5,753.71 : x
  2. Step 2: Convert to fraction form
    20,545.72/30,815.53 = 5,753.71/x
  3. Step 3: Cross multiply
    20,545.72x = 30,815.53 × 5,753.71
  4. Step 4: Simplify right side
    20,545.72x = 177,303,623.12
  5. Step 5: Solve for x
    x = 177,303,623.12/20,545.72
  6. Step 6: Final answer
    x = 8,629.71

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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.