Home / 18,743.56-28,115.32-7,655.46

Finding the Fourth Proportional to 18,743.56, 28,115.32 and 7,655.46

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Solution

The fourth proportional to 18,743.56, 28,115.32 and 7,655.46 is: 11,483.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.56 : 28,115.32 = 7,655.46 : x
  2. Step 2: Convert to fraction form
    18,743.56/28,115.32 = 7,655.46/x
  3. Step 3: Cross multiply
    18,743.56x = 28,115.32 × 7,655.46
  4. Step 4: Simplify right side
    18,743.56x = 215,235,707.65
  5. Step 5: Solve for x
    x = 215,235,707.65/18,743.56
  6. Step 6: Final answer
    x = 11,483.18

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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.