Home / 18,189.40-27,235.50-10,387.48

Finding the Fourth Proportional to 18,189.40, 27,235.50 and 10,387.48

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Solution

The fourth proportional to 18,189.40, 27,235.50 and 10,387.48 is: 15,553.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.40 : 27,235.50 = 10,387.48 : x
  2. Step 2: Convert to fraction form
    18,189.40/27,235.50 = 10,387.48/x
  3. Step 3: Cross multiply
    18,189.40x = 27,235.50 × 10,387.48
  4. Step 4: Simplify right side
    18,189.40x = 282,908,211.54
  5. Step 5: Solve for x
    x = 282,908,211.54/18,189.40
  6. Step 6: Final answer
    x = 15,553.47

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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.