Home / 18,812.52-28,221.70-6,331.57

Finding the Fourth Proportional to 18,812.52, 28,221.70 and 6,331.57

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Solution

The fourth proportional to 18,812.52, 28,221.70 and 6,331.57 is: 9,498.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,812.52 : 28,221.70 = 6,331.57 : x
  2. Step 2: Convert to fraction form
    18,812.52/28,221.70 = 6,331.57/x
  3. Step 3: Cross multiply
    18,812.52x = 28,221.70 × 6,331.57
  4. Step 4: Simplify right side
    18,812.52x = 178,687,669.07
  5. Step 5: Solve for x
    x = 178,687,669.07/18,812.52
  6. Step 6: Final answer
    x = 9,498.34

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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.