Home / 28,194.28-38,909.37-15,618.22

Finding the Fourth Proportional to 28,194.28, 38,909.37 and 15,618.22

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Solution

The fourth proportional to 28,194.28, 38,909.37 and 15,618.22 is: 21,553.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,194.28 : 38,909.37 = 15,618.22 : x
  2. Step 2: Convert to fraction form
    28,194.28/38,909.37 = 15,618.22/x
  3. Step 3: Cross multiply
    28,194.28x = 38,909.37 × 15,618.22
  4. Step 4: Simplify right side
    28,194.28x = 607,695,100.72
  5. Step 5: Solve for x
    x = 607,695,100.72/28,194.28
  6. Step 6: Final answer
    x = 21,553.84

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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.