Home / 18,030.47-27,042.57-4,879.76

Finding the Fourth Proportional to 18,030.47, 27,042.57 and 4,879.76

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Solution

The fourth proportional to 18,030.47, 27,042.57 and 4,879.76 is: 7,318.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,030.47 : 27,042.57 = 4,879.76 : x
  2. Step 2: Convert to fraction form
    18,030.47/27,042.57 = 4,879.76/x
  3. Step 3: Cross multiply
    18,030.47x = 27,042.57 × 4,879.76
  4. Step 4: Simplify right side
    18,030.47x = 131,961,251.38
  5. Step 5: Solve for x
    x = 131,961,251.38/18,030.47
  6. Step 6: Final answer
    x = 7,318.79

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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.