Home / 27,230.78-40,821.54-18,914.70

Finding the Fourth Proportional to 27,230.78, 40,821.54 and 18,914.70

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Solution

The fourth proportional to 27,230.78, 40,821.54 and 18,914.70 is: 28,354.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,230.78 : 40,821.54 = 18,914.70 : x
  2. Step 2: Convert to fraction form
    27,230.78/40,821.54 = 18,914.70/x
  3. Step 3: Cross multiply
    27,230.78x = 40,821.54 × 18,914.70
  4. Step 4: Simplify right side
    27,230.78x = 772,127,182.64
  5. Step 5: Solve for x
    x = 772,127,182.64/27,230.78
  6. Step 6: Final answer
    x = 28,354.95

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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.