Home / 10,491.90-15,732.45-3,914.70

Finding the Fourth Proportional to 10,491.90, 15,732.45 and 3,914.70

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Solution

The fourth proportional to 10,491.90, 15,732.45 and 3,914.70 is: 5,870.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,491.90 : 15,732.45 = 3,914.70 : x
  2. Step 2: Convert to fraction form
    10,491.90/15,732.45 = 3,914.70/x
  3. Step 3: Cross multiply
    10,491.90x = 15,732.45 × 3,914.70
  4. Step 4: Simplify right side
    10,491.90x = 61,587,822.02
  5. Step 5: Solve for x
    x = 61,587,822.02/10,491.90
  6. Step 6: Final answer
    x = 5,870.04

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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.