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Finding the Fourth Proportional to 20,446.31, 30,670.07 and 5,656.31

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Solution

The fourth proportional to 20,446.31, 30,670.07 and 5,656.31 is: 8,484.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446.31 : 30,670.07 = 5,656.31 : x
  2. Step 2: Convert to fraction form
    20,446.31/30,670.07 = 5,656.31/x
  3. Step 3: Cross multiply
    20,446.31x = 30,670.07 × 5,656.31
  4. Step 4: Simplify right side
    20,446.31x = 173,479,472.04
  5. Step 5: Solve for x
    x = 173,479,472.04/20,446.31
  6. Step 6: Final answer
    x = 8,484.64

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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.