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Finding the Fourth Proportional to 20,437.78, 30,657.97 and 5,444.65

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Solution

The fourth proportional to 20,437.78, 30,657.97 and 5,444.65 is: 8,167.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.78 : 30,657.97 = 5,444.65 : x
  2. Step 2: Convert to fraction form
    20,437.78/30,657.97 = 5,444.65/x
  3. Step 3: Cross multiply
    20,437.78x = 30,657.97 × 5,444.65
  4. Step 4: Simplify right side
    20,437.78x = 166,921,916.36
  5. Step 5: Solve for x
    x = 166,921,916.36/20,437.78
  6. Step 6: Final answer
    x = 8,167.32

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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.