Home / 11,192.80-15,448.08-6,479.68

Finding the Fourth Proportional to 11,192.80, 15,448.08 and 6,479.68

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Solution

The fourth proportional to 11,192.80, 15,448.08 and 6,479.68 is: 8,943.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,192.80 : 15,448.08 = 6,479.68 : x
  2. Step 2: Convert to fraction form
    11,192.80/15,448.08 = 6,479.68/x
  3. Step 3: Cross multiply
    11,192.80x = 15,448.08 × 6,479.68
  4. Step 4: Simplify right side
    11,192.80x = 100,098,615.01
  5. Step 5: Solve for x
    x = 100,098,615.01/11,192.80
  6. Step 6: Final answer
    x = 8,943.13

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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.