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Finding the Fourth Proportional to 30,337.84, 41,868.90 and 18,407.76

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Solution

The fourth proportional to 30,337.84, 41,868.90 and 18,407.76 is: 25,404.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,337.84 : 41,868.90 = 18,407.76 : x
  2. Step 2: Convert to fraction form
    30,337.84/41,868.90 = 18,407.76/x
  3. Step 3: Cross multiply
    30,337.84x = 41,868.90 × 18,407.76
  4. Step 4: Simplify right side
    30,337.84x = 770,712,505.66
  5. Step 5: Solve for x
    x = 770,712,505.66/30,337.84
  6. Step 6: Final answer
    x = 25,404.33

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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.