Home / 10,647.81-15,971.13-3,251.61

Finding the Fourth Proportional to 10,647.81, 15,971.13 and 3,251.61

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Solution

The fourth proportional to 10,647.81, 15,971.13 and 3,251.61 is: 4,877.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,647.81 : 15,971.13 = 3,251.61 : x
  2. Step 2: Convert to fraction form
    10,647.81/15,971.13 = 3,251.61/x
  3. Step 3: Cross multiply
    10,647.81x = 15,971.13 × 3,251.61
  4. Step 4: Simplify right side
    10,647.81x = 51,931,886.02
  5. Step 5: Solve for x
    x = 51,931,886.02/10,647.81
  6. Step 6: Final answer
    x = 4,877.24

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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.