Home / 18,867.15-28,300.77-6,387.30

Finding the Fourth Proportional to 18,867.15, 28,300.77 and 6,387.30

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Solution

The fourth proportional to 18,867.15, 28,300.77 and 6,387.30 is: 9,580.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.15 : 28,300.77 = 6,387.30 : x
  2. Step 2: Convert to fraction form
    18,867.15/28,300.77 = 6,387.30/x
  3. Step 3: Cross multiply
    18,867.15x = 28,300.77 × 6,387.30
  4. Step 4: Simplify right side
    18,867.15x = 180,765,508.22
  5. Step 5: Solve for x
    x = 180,765,508.22/18,867.15
  6. Step 6: Final answer
    x = 9,580.97

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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.