Home / 18,854.90-28,286.40-5,708.60

Finding the Fourth Proportional to 18,854.90, 28,286.40 and 5,708.60

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Solution

The fourth proportional to 18,854.90, 28,286.40 and 5,708.60 is: 8,564.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.90 : 28,286.40 = 5,708.60 : x
  2. Step 2: Convert to fraction form
    18,854.90/28,286.40 = 5,708.60/x
  3. Step 3: Cross multiply
    18,854.90x = 28,286.40 × 5,708.60
  4. Step 4: Simplify right side
    18,854.90x = 161,475,743.04
  5. Step 5: Solve for x
    x = 161,475,743.04/18,854.90
  6. Step 6: Final answer
    x = 8,564.13

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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.