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Finding the Fourth Proportional to 34,702.92, 47,890.66 and 20,373

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Solution

The fourth proportional to 34,702.92, 47,890.66 and 20,373 is: 28,115.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,702.92 : 47,890.66 = 20,373 : x
  2. Step 2: Convert to fraction form
    34,702.92/47,890.66 = 20,373/x
  3. Step 3: Cross multiply
    34,702.92x = 47,890.66 × 20,373
  4. Step 4: Simplify right side
    34,702.92x = 975,676,416.18
  5. Step 5: Solve for x
    x = 975,676,416.18/34,702.92
  6. Step 6: Final answer
    x = 28,115.11

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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.