Home / 13,719.15-18,930.72-7,750.53

Finding the Fourth Proportional to 13,719.15, 18,930.72 and 7,750.53

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Solution

The fourth proportional to 13,719.15, 18,930.72 and 7,750.53 is: 10,694.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.15 : 18,930.72 = 7,750.53 : x
  2. Step 2: Convert to fraction form
    13,719.15/18,930.72 = 7,750.53/x
  3. Step 3: Cross multiply
    13,719.15x = 18,930.72 × 7,750.53
  4. Step 4: Simplify right side
    13,719.15x = 146,723,113.28
  5. Step 5: Solve for x
    x = 146,723,113.28/13,719.15
  6. Step 6: Final answer
    x = 10,694.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.