Home / 28,105.95-38,769.22-18,542.43

Finding the Fourth Proportional to 28,105.95, 38,769.22 and 18,542.43

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Solution

The fourth proportional to 28,105.95, 38,769.22 and 18,542.43 is: 25,577.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,105.95 : 38,769.22 = 18,542.43 : x
  2. Step 2: Convert to fraction form
    28,105.95/38,769.22 = 18,542.43/x
  3. Step 3: Cross multiply
    28,105.95x = 38,769.22 × 18,542.43
  4. Step 4: Simplify right side
    28,105.95x = 718,875,548.00
  5. Step 5: Solve for x
    x = 718,875,548.00/28,105.95
  6. Step 6: Final answer
    x = 25,577.34

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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.