Home / 28,489.92-42,722.88-11,618.24

Finding the Fourth Proportional to 28,489.92, 42,722.88 and 11,618.24

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Solution

The fourth proportional to 28,489.92, 42,722.88 and 11,618.24 is: 17,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.92 : 42,722.88 = 11,618.24 : x
  2. Step 2: Convert to fraction form
    28,489.92/42,722.88 = 11,618.24/x
  3. Step 3: Cross multiply
    28,489.92x = 42,722.88 × 11,618.24
  4. Step 4: Simplify right side
    28,489.92x = 496,364,673.33
  5. Step 5: Solve for x
    x = 496,364,673.33/28,489.92
  6. Step 6: Final answer
    x = 17,422.47

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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.