Home / 34,351.68-47,397.12-20,922.72

Finding the Fourth Proportional to 34,351.68, 47,397.12 and 20,922.72

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Solution

The fourth proportional to 34,351.68, 47,397.12 and 20,922.72 is: 28,868.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,351.68 : 47,397.12 = 20,922.72 : x
  2. Step 2: Convert to fraction form
    34,351.68/47,397.12 = 20,922.72/x
  3. Step 3: Cross multiply
    34,351.68x = 47,397.12 × 20,922.72
  4. Step 4: Simplify right side
    34,351.68x = 991,676,670.57
  5. Step 5: Solve for x
    x = 991,676,670.57/34,351.68
  6. Step 6: Final answer
    x = 28,868.36

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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.