Home / 13,718.32-20,578.65-5,397.82

Finding the Fourth Proportional to 13,718.32, 20,578.65 and 5,397.82

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Solution

The fourth proportional to 13,718.32, 20,578.65 and 5,397.82 is: 8,097.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.32 : 20,578.65 = 5,397.82 : x
  2. Step 2: Convert to fraction form
    13,718.32/20,578.65 = 5,397.82/x
  3. Step 3: Cross multiply
    13,718.32x = 20,578.65 × 5,397.82
  4. Step 4: Simplify right side
    13,718.32x = 111,079,848.54
  5. Step 5: Solve for x
    x = 111,079,848.54/13,718.32
  6. Step 6: Final answer
    x = 8,097.19

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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.