Home / 18,749.20-28,091.40-8,867.20

Finding the Fourth Proportional to 18,749.20, 28,091.40 and 8,867.20

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Solution

The fourth proportional to 18,749.20, 28,091.40 and 8,867.20 is: 13,285.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.20 : 28,091.40 = 8,867.20 : x
  2. Step 2: Convert to fraction form
    18,749.20/28,091.40 = 8,867.20/x
  3. Step 3: Cross multiply
    18,749.20x = 28,091.40 × 8,867.20
  4. Step 4: Simplify right side
    18,749.20x = 249,092,062.08
  5. Step 5: Solve for x
    x = 249,092,062.08/18,749.20
  6. Step 6: Final answer
    x = 13,285.48

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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.