Home / 30,135.60-41,578.50-17,387.76

Finding the Fourth Proportional to 30,135.60, 41,578.50 and 17,387.76

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Solution

The fourth proportional to 30,135.60, 41,578.50 and 17,387.76 is: 23,990.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,135.60 : 41,578.50 = 17,387.76 : x
  2. Step 2: Convert to fraction form
    30,135.60/41,578.50 = 17,387.76/x
  3. Step 3: Cross multiply
    30,135.60x = 41,578.50 × 17,387.76
  4. Step 4: Simplify right side
    30,135.60x = 722,956,979.16
  5. Step 5: Solve for x
    x = 722,956,979.16/30,135.60
  6. Step 6: Final answer
    x = 23,990.13

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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.