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Finding the Fourth Proportional to 20,552.70, 30,810.51 and 7,395.78

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Solution

The fourth proportional to 20,552.70, 30,810.51 and 7,395.78 is: 11,087.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.70 : 30,810.51 = 7,395.78 : x
  2. Step 2: Convert to fraction form
    20,552.70/30,810.51 = 7,395.78/x
  3. Step 3: Cross multiply
    20,552.70x = 30,810.51 × 7,395.78
  4. Step 4: Simplify right side
    20,552.70x = 227,867,753.65
  5. Step 5: Solve for x
    x = 227,867,753.65/20,552.70
  6. Step 6: Final answer
    x = 11,087.00

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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.