Home / 10,238.40-14,120.16-7,996.80

Finding the Fourth Proportional to 10,238.40, 14,120.16 and 7,996.80

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Solution

The fourth proportional to 10,238.40, 14,120.16 and 7,996.80 is: 11,028.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,238.40 : 14,120.16 = 7,996.80 : x
  2. Step 2: Convert to fraction form
    10,238.40/14,120.16 = 7,996.80/x
  3. Step 3: Cross multiply
    10,238.40x = 14,120.16 × 7,996.80
  4. Step 4: Simplify right side
    10,238.40x = 112,916,095.49
  5. Step 5: Solve for x
    x = 112,916,095.49/10,238.40
  6. Step 6: Final answer
    x = 11,028.69

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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.