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Finding the Fourth Proportional to 34,397.92, 47,477.58 and 20,976.58

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Solution

The fourth proportional to 34,397.92, 47,477.58 and 20,976.58 is: 28,952.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,397.92 : 47,477.58 = 20,976.58 : x
  2. Step 2: Convert to fraction form
    34,397.92/47,477.58 = 20,976.58/x
  3. Step 3: Cross multiply
    34,397.92x = 47,477.58 × 20,976.58
  4. Step 4: Simplify right side
    34,397.92x = 995,917,255.08
  5. Step 5: Solve for x
    x = 995,917,255.08/34,397.92
  6. Step 6: Final answer
    x = 28,952.83

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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.