Home / 28,974.11-43,470.47-13,184.78

Finding the Fourth Proportional to 28,974.11, 43,470.47 and 13,184.78

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Solution

The fourth proportional to 28,974.11, 43,470.47 and 13,184.78 is: 19,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,974.11 : 43,470.47 = 13,184.78 : x
  2. Step 2: Convert to fraction form
    28,974.11/43,470.47 = 13,184.78/x
  3. Step 3: Cross multiply
    28,974.11x = 43,470.47 × 13,184.78
  4. Step 4: Simplify right side
    28,974.11x = 573,148,399.06
  5. Step 5: Solve for x
    x = 573,148,399.06/28,974.11
  6. Step 6: Final answer
    x = 19,781.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.