Home / 10,239.92-14,131.60-5,765.12

Finding the Fourth Proportional to 10,239.92, 14,131.60 and 5,765.12

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Solution

The fourth proportional to 10,239.92, 14,131.60 and 5,765.12 is: 7,956.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,239.92 : 14,131.60 = 5,765.12 : x
  2. Step 2: Convert to fraction form
    10,239.92/14,131.60 = 5,765.12/x
  3. Step 3: Cross multiply
    10,239.92x = 14,131.60 × 5,765.12
  4. Step 4: Simplify right side
    10,239.92x = 81,470,369.79
  5. Step 5: Solve for x
    x = 81,470,369.79/10,239.92
  6. Step 6: Final answer
    x = 7,956.15

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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.