Home / 10,491.18-15,736.81-3,917.30

Finding the Fourth Proportional to 10,491.18, 15,736.81 and 3,917.30

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Solution

The fourth proportional to 10,491.18, 15,736.81 and 3,917.30 is: 5,875.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,491.18 : 15,736.81 = 3,917.30 : x
  2. Step 2: Convert to fraction form
    10,491.18/15,736.81 = 3,917.30/x
  3. Step 3: Cross multiply
    10,491.18x = 15,736.81 × 3,917.30
  4. Step 4: Simplify right side
    10,491.18x = 61,645,717.34
  5. Step 5: Solve for x
    x = 61,645,717.34/10,491.18
  6. Step 6: Final answer
    x = 5,875.96

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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.