Home / 10,618.31-15,885.54-9,371.72

Finding the Fourth Proportional to 10,618.31, 15,885.54 and 9,371.72

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Solution

The fourth proportional to 10,618.31, 15,885.54 and 9,371.72 is: 14,020.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,618.31 : 15,885.54 = 9,371.72 : x
  2. Step 2: Convert to fraction form
    10,618.31/15,885.54 = 9,371.72/x
  3. Step 3: Cross multiply
    10,618.31x = 15,885.54 × 9,371.72
  4. Step 4: Simplify right side
    10,618.31x = 148,874,753.50
  5. Step 5: Solve for x
    x = 148,874,753.50/10,618.31
  6. Step 6: Final answer
    x = 14,020.58

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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.