Home / 13,391.96-18,479.19-7,423.57

Finding the Fourth Proportional to 13,391.96, 18,479.19 and 7,423.57

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Solution

The fourth proportional to 13,391.96, 18,479.19 and 7,423.57 is: 10,243.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.96 : 18,479.19 = 7,423.57 : x
  2. Step 2: Convert to fraction form
    13,391.96/18,479.19 = 7,423.57/x
  3. Step 3: Cross multiply
    13,391.96x = 18,479.19 × 7,423.57
  4. Step 4: Simplify right side
    13,391.96x = 137,181,514.31
  5. Step 5: Solve for x
    x = 137,181,514.31/13,391.96
  6. Step 6: Final answer
    x = 10,243.58

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1.5x scale

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.