Home / 12,871.38-19,309.90-7,327.32

Finding the Fourth Proportional to 12,871.38, 19,309.90 and 7,327.32

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Solution

The fourth proportional to 12,871.38, 19,309.90 and 7,327.32 is: 10,992.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.38 : 19,309.90 = 7,327.32 : x
  2. Step 2: Convert to fraction form
    12,871.38/19,309.90 = 7,327.32/x
  3. Step 3: Cross multiply
    12,871.38x = 19,309.90 × 7,327.32
  4. Step 4: Simplify right side
    12,871.38x = 141,489,816.47
  5. Step 5: Solve for x
    x = 141,489,816.47/12,871.38
  6. Step 6: Final answer
    x = 10,992.59

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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.