Home / 12,491.36-18,743.15-5,470.41

Finding the Fourth Proportional to 12,491.36, 18,743.15 and 5,470.41

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Solution

The fourth proportional to 12,491.36, 18,743.15 and 5,470.41 is: 8,208.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.36 : 18,743.15 = 5,470.41 : x
  2. Step 2: Convert to fraction form
    12,491.36/18,743.15 = 5,470.41/x
  3. Step 3: Cross multiply
    12,491.36x = 18,743.15 × 5,470.41
  4. Step 4: Simplify right side
    12,491.36x = 102,532,715.19
  5. Step 5: Solve for x
    x = 102,532,715.19/12,491.36
  6. Step 6: Final answer
    x = 8,208.29

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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.