Home / 10,238.76-15,345.48-5,305.56

Finding the Fourth Proportional to 10,238.76, 15,345.48 and 5,305.56

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Solution

The fourth proportional to 10,238.76, 15,345.48 and 5,305.56 is: 7,951.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,238.76 : 15,345.48 = 5,305.56 : x
  2. Step 2: Convert to fraction form
    10,238.76/15,345.48 = 5,305.56/x
  3. Step 3: Cross multiply
    10,238.76x = 15,345.48 × 5,305.56
  4. Step 4: Simplify right side
    10,238.76x = 81,416,364.87
  5. Step 5: Solve for x
    x = 81,416,364.87/10,238.76
  6. Step 6: Final answer
    x = 7,951.78

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1.5x scale

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.