Home / 15,393.76-21,243.24-8,587.84

Finding the Fourth Proportional to 15,393.76, 21,243.24 and 8,587.84

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Solution

The fourth proportional to 15,393.76, 21,243.24 and 8,587.84 is: 11,851.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.76 : 21,243.24 = 8,587.84 : x
  2. Step 2: Convert to fraction form
    15,393.76/21,243.24 = 8,587.84/x
  3. Step 3: Cross multiply
    15,393.76x = 21,243.24 × 8,587.84
  4. Step 4: Simplify right side
    15,393.76x = 182,433,546.20
  5. Step 5: Solve for x
    x = 182,433,546.20/15,393.76
  6. Step 6: Final answer
    x = 11,851.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.