Home / 10,988.32-16,470.96-5,140

Finding the Fourth Proportional to 10,988.32, 16,470.96 and 5,140

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Solution

The fourth proportional to 10,988.32, 16,470.96 and 5,140 is: 7,704.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.32 : 16,470.96 = 5,140 : x
  2. Step 2: Convert to fraction form
    10,988.32/16,470.96 = 5,140/x
  3. Step 3: Cross multiply
    10,988.32x = 16,470.96 × 5,140
  4. Step 4: Simplify right side
    10,988.32x = 84,660,734.40
  5. Step 5: Solve for x
    x = 84,660,734.40/10,988.32
  6. Step 6: Final answer
    x = 7,704.61

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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.