Home / 10,120.32-13,969.20-8,230.38

Finding the Fourth Proportional to 10,120.32, 13,969.20 and 8,230.38

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Solution

The fourth proportional to 10,120.32, 13,969.20 and 8,230.38 is: 11,360.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.32 : 13,969.20 = 8,230.38 : x
  2. Step 2: Convert to fraction form
    10,120.32/13,969.20 = 8,230.38/x
  3. Step 3: Cross multiply
    10,120.32x = 13,969.20 × 8,230.38
  4. Step 4: Simplify right side
    10,120.32x = 114,971,824.30
  5. Step 5: Solve for x
    x = 114,971,824.30/10,120.32
  6. Step 6: Final answer
    x = 11,360.49

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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.