Home / 10,921.16-15,072.54-6,205.88

Finding the Fourth Proportional to 10,921.16, 15,072.54 and 6,205.88

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Solution

The fourth proportional to 10,921.16, 15,072.54 and 6,205.88 is: 8,564.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.16 : 15,072.54 = 6,205.88 : x
  2. Step 2: Convert to fraction form
    10,921.16/15,072.54 = 6,205.88/x
  3. Step 3: Cross multiply
    10,921.16x = 15,072.54 × 6,205.88
  4. Step 4: Simplify right side
    10,921.16x = 93,538,374.54
  5. Step 5: Solve for x
    x = 93,538,374.54/10,921.16
  6. Step 6: Final answer
    x = 8,564.88

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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.