Home / 12,739.38-19,130.76-8,304.60

Finding the Fourth Proportional to 12,739.38, 19,130.76 and 8,304.60

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Solution

The fourth proportional to 12,739.38, 19,130.76 and 8,304.60 is: 12,471.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.38 : 19,130.76 = 8,304.60 : x
  2. Step 2: Convert to fraction form
    12,739.38/19,130.76 = 8,304.60/x
  3. Step 3: Cross multiply
    12,739.38x = 19,130.76 × 8,304.60
  4. Step 4: Simplify right side
    12,739.38x = 158,873,309.50
  5. Step 5: Solve for x
    x = 158,873,309.50/12,739.38
  6. Step 6: Final answer
    x = 12,471.04

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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.