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Finding the Fourth Proportional to 20,045.68, 30,062.44 and 6,890.48

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Solution

The fourth proportional to 20,045.68, 30,062.44 and 6,890.48 is: 10,333.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,045.68 : 30,062.44 = 6,890.48 : x
  2. Step 2: Convert to fraction form
    20,045.68/30,062.44 = 6,890.48/x
  3. Step 3: Cross multiply
    20,045.68x = 30,062.44 × 6,890.48
  4. Step 4: Simplify right side
    20,045.68x = 207,144,641.57
  5. Step 5: Solve for x
    x = 207,144,641.57/20,045.68
  6. Step 6: Final answer
    x = 10,333.63

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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.