Home / 11,371.86-15,693.20-7,399.72

Finding the Fourth Proportional to 11,371.86, 15,693.20 and 7,399.72

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Solution

The fourth proportional to 11,371.86, 15,693.20 and 7,399.72 is: 10,211.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,371.86 : 15,693.20 = 7,399.72 : x
  2. Step 2: Convert to fraction form
    11,371.86/15,693.20 = 7,399.72/x
  3. Step 3: Cross multiply
    11,371.86x = 15,693.20 × 7,399.72
  4. Step 4: Simplify right side
    11,371.86x = 116,125,285.90
  5. Step 5: Solve for x
    x = 116,125,285.90/11,371.86
  6. Step 6: Final answer
    x = 10,211.64

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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.