Home / 28,418.28-39,221.00-16,479.15

Finding the Fourth Proportional to 28,418.28, 39,221.00 and 16,479.15

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Solution

The fourth proportional to 28,418.28, 39,221.00 and 16,479.15 is: 22,743.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,418.28 : 39,221.00 = 16,479.15 : x
  2. Step 2: Convert to fraction form
    28,418.28/39,221.00 = 16,479.15/x
  3. Step 3: Cross multiply
    28,418.28x = 39,221.00 × 16,479.15
  4. Step 4: Simplify right side
    28,418.28x = 646,328,659.75
  5. Step 5: Solve for x
    x = 646,328,659.75/28,418.28
  6. Step 6: Final answer
    x = 22,743.41

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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.