Home / 14,105.28-21,158.19-4,743.57

Finding the Fourth Proportional to 14,105.28, 21,158.19 and 4,743.57

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Solution

The fourth proportional to 14,105.28, 21,158.19 and 4,743.57 is: 7,115.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,105.28 : 21,158.19 = 4,743.57 : x
  2. Step 2: Convert to fraction form
    14,105.28/21,158.19 = 4,743.57/x
  3. Step 3: Cross multiply
    14,105.28x = 21,158.19 × 4,743.57
  4. Step 4: Simplify right side
    14,105.28x = 100,365,355.34
  5. Step 5: Solve for x
    x = 100,365,355.34/14,105.28
  6. Step 6: Final answer
    x = 7,115.45

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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.