Home / 34,394.31-47,472.59-20,972.96

Finding the Fourth Proportional to 34,394.31, 47,472.59 and 20,972.96

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Solution

The fourth proportional to 34,394.31, 47,472.59 and 20,972.96 is: 28,947.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,394.31 : 47,472.59 = 20,972.96 : x
  2. Step 2: Convert to fraction form
    34,394.31/47,472.59 = 20,972.96/x
  3. Step 3: Cross multiply
    34,394.31x = 47,472.59 × 20,972.96
  4. Step 4: Simplify right side
    34,394.31x = 995,640,731.17
  5. Step 5: Solve for x
    x = 995,640,731.17/34,394.31
  6. Step 6: Final answer
    x = 28,947.83

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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.