Home / 18,739.97-28,119.06-8,867.48

Finding the Fourth Proportional to 18,739.97, 28,119.06 and 8,867.48

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Solution

The fourth proportional to 18,739.97, 28,119.06 and 8,867.48 is: 13,305.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.97 : 28,119.06 = 8,867.48 : x
  2. Step 2: Convert to fraction form
    18,739.97/28,119.06 = 8,867.48/x
  3. Step 3: Cross multiply
    18,739.97x = 28,119.06 × 8,867.48
  4. Step 4: Simplify right side
    18,739.97x = 249,345,272.47
  5. Step 5: Solve for x
    x = 249,345,272.47/18,739.97
  6. Step 6: Final answer
    x = 13,305.54

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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.