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Finding the Fourth Proportional to 30,377.31, 41,920.54 and 16,948.57

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Solution

The fourth proportional to 30,377.31, 41,920.54 and 16,948.57 is: 23,388.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,377.31 : 41,920.54 = 16,948.57 : x
  2. Step 2: Convert to fraction form
    30,377.31/41,920.54 = 16,948.57/x
  3. Step 3: Cross multiply
    30,377.31x = 41,920.54 × 16,948.57
  4. Step 4: Simplify right side
    30,377.31x = 710,493,206.63
  5. Step 5: Solve for x
    x = 710,493,206.63/30,377.31
  6. Step 6: Final answer
    x = 23,388.94

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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.