Home / 28,186.92-38,889.18-18,757.08

Finding the Fourth Proportional to 28,186.92, 38,889.18 and 18,757.08

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Solution

The fourth proportional to 28,186.92, 38,889.18 and 18,757.08 is: 25,878.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.92 : 38,889.18 = 18,757.08 : x
  2. Step 2: Convert to fraction form
    28,186.92/38,889.18 = 18,757.08/x
  3. Step 3: Cross multiply
    28,186.92x = 38,889.18 × 18,757.08
  4. Step 4: Simplify right side
    28,186.92x = 729,447,460.39
  5. Step 5: Solve for x
    x = 729,447,460.39/28,186.92
  6. Step 6: Final answer
    x = 25,878.93

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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.