Home / 18,688.17-28,035.71-5,360.61

Finding the Fourth Proportional to 18,688.17, 28,035.71 and 5,360.61

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Solution

The fourth proportional to 18,688.17, 28,035.71 and 5,360.61 is: 8,041.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.17 : 28,035.71 = 5,360.61 : x
  2. Step 2: Convert to fraction form
    18,688.17/28,035.71 = 5,360.61/x
  3. Step 3: Cross multiply
    18,688.17x = 28,035.71 × 5,360.61
  4. Step 4: Simplify right side
    18,688.17x = 150,288,367.20
  5. Step 5: Solve for x
    x = 150,288,367.20/18,688.17
  6. Step 6: Final answer
    x = 8,041.90

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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.