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Finding the Fourth Proportional to 20,437.96, 30,657.01 and 5,646.55

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Solution

The fourth proportional to 20,437.96, 30,657.01 and 5,646.55 is: 8,469.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.96 : 30,657.01 = 5,646.55 : x
  2. Step 2: Convert to fraction form
    20,437.96/30,657.01 = 5,646.55/x
  3. Step 3: Cross multiply
    20,437.96x = 30,657.01 × 5,646.55
  4. Step 4: Simplify right side
    20,437.96x = 173,106,339.82
  5. Step 5: Solve for x
    x = 173,106,339.82/20,437.96
  6. Step 6: Final answer
    x = 8,469.84

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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.