Home / 18,826.81-28,230.12-6,342.70

Finding the Fourth Proportional to 18,826.81, 28,230.12 and 6,342.70

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Solution

The fourth proportional to 18,826.81, 28,230.12 and 6,342.70 is: 9,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,826.81 : 28,230.12 = 6,342.70 : x
  2. Step 2: Convert to fraction form
    18,826.81/28,230.12 = 6,342.70/x
  3. Step 3: Cross multiply
    18,826.81x = 28,230.12 × 6,342.70
  4. Step 4: Simplify right side
    18,826.81x = 179,055,182.12
  5. Step 5: Solve for x
    x = 179,055,182.12/18,826.81
  6. Step 6: Final answer
    x = 9,510.65

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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.