Home / 18,867.50-28,305.34-5,720.86

Finding the Fourth Proportional to 18,867.50, 28,305.34 and 5,720.86

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Solution

The fourth proportional to 18,867.50, 28,305.34 and 5,720.86 is: 8,582.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.50 : 28,305.34 = 5,720.86 : x
  2. Step 2: Convert to fraction form
    18,867.50/28,305.34 = 5,720.86/x
  3. Step 3: Cross multiply
    18,867.50x = 28,305.34 × 5,720.86
  4. Step 4: Simplify right side
    18,867.50x = 161,930,908.47
  5. Step 5: Solve for x
    x = 161,930,908.47/18,867.50
  6. Step 6: Final answer
    x = 8,582.53

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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.