Home / 13,707.56-20,568.38-5,815.48

Finding the Fourth Proportional to 13,707.56, 20,568.38 and 5,815.48

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Solution

The fourth proportional to 13,707.56, 20,568.38 and 5,815.48 is: 8,726.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.56 : 20,568.38 = 5,815.48 : x
  2. Step 2: Convert to fraction form
    13,707.56/20,568.38 = 5,815.48/x
  3. Step 3: Cross multiply
    13,707.56x = 20,568.38 × 5,815.48
  4. Step 4: Simplify right side
    13,707.56x = 119,615,002.52
  5. Step 5: Solve for x
    x = 119,615,002.52/13,707.56
  6. Step 6: Final answer
    x = 8,726.21

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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.