Home / 30,849.70-42,572.82-16,702.78

Finding the Fourth Proportional to 30,849.70, 42,572.82 and 16,702.78

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Solution

The fourth proportional to 30,849.70, 42,572.82 and 16,702.78 is: 23,049.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,849.70 : 42,572.82 = 16,702.78 : x
  2. Step 2: Convert to fraction form
    30,849.70/42,572.82 = 16,702.78/x
  3. Step 3: Cross multiply
    30,849.70x = 42,572.82 × 16,702.78
  4. Step 4: Simplify right side
    30,849.70x = 711,084,446.44
  5. Step 5: Solve for x
    x = 711,084,446.44/30,849.70
  6. Step 6: Final answer
    x = 23,049.96

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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.