Home / 18,862.47-28,298.57-7,169.31

Finding the Fourth Proportional to 18,862.47, 28,298.57 and 7,169.31

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Solution

The fourth proportional to 18,862.47, 28,298.57 and 7,169.31 is: 10,755.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,862.47 : 28,298.57 = 7,169.31 : x
  2. Step 2: Convert to fraction form
    18,862.47/28,298.57 = 7,169.31/x
  3. Step 3: Cross multiply
    18,862.47x = 28,298.57 × 7,169.31
  4. Step 4: Simplify right side
    18,862.47x = 202,881,185.04
  5. Step 5: Solve for x
    x = 202,881,185.04/18,862.47
  6. Step 6: Final answer
    x = 10,755.81

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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.