Home / 28,678.38-39,559-18,049.56

Finding the Fourth Proportional to 28,678.38, 39,559 and 18,049.56

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Solution

The fourth proportional to 28,678.38, 39,559 and 18,049.56 is: 24,897.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.38 : 39,559 = 18,049.56 : x
  2. Step 2: Convert to fraction form
    28,678.38/39,559 = 18,049.56/x
  3. Step 3: Cross multiply
    28,678.38x = 39,559 × 18,049.56
  4. Step 4: Simplify right side
    28,678.38x = 714,022,544.04
  5. Step 5: Solve for x
    x = 714,022,544.04/28,678.38
  6. Step 6: Final answer
    x = 24,897.59

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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.