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Finding the Fourth Proportional to 30,380.88, 41,925.96 and 17,132.88

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Solution

The fourth proportional to 30,380.88, 41,925.96 and 17,132.88 is: 23,643.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,380.88 : 41,925.96 = 17,132.88 : x
  2. Step 2: Convert to fraction form
    30,380.88/41,925.96 = 17,132.88/x
  3. Step 3: Cross multiply
    30,380.88x = 41,925.96 × 17,132.88
  4. Step 4: Simplify right side
    30,380.88x = 718,312,441.56
  5. Step 5: Solve for x
    x = 718,312,441.56/30,380.88
  6. Step 6: Final answer
    x = 23,643.57

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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.