Home / 34,343.98-47,398.68-20,923.12

Finding the Fourth Proportional to 34,343.98, 47,398.68 and 20,923.12

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Solution

The fourth proportional to 34,343.98, 47,398.68 and 20,923.12 is: 28,876.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,343.98 : 47,398.68 = 20,923.12 : x
  2. Step 2: Convert to fraction form
    34,343.98/47,398.68 = 20,923.12/x
  3. Step 3: Cross multiply
    34,343.98x = 47,398.68 × 20,923.12
  4. Step 4: Simplify right side
    34,343.98x = 991,728,269.48
  5. Step 5: Solve for x
    x = 991,728,269.48/34,343.98
  6. Step 6: Final answer
    x = 28,876.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.