Home / 12,871.20-19,301.32-7,327.16

Finding the Fourth Proportional to 12,871.20, 19,301.32 and 7,327.16

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Solution

The fourth proportional to 12,871.20, 19,301.32 and 7,327.16 is: 10,987.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.20 : 19,301.32 = 7,327.16 : x
  2. Step 2: Convert to fraction form
    12,871.20/19,301.32 = 7,327.16/x
  3. Step 3: Cross multiply
    12,871.20x = 19,301.32 × 7,327.16
  4. Step 4: Simplify right side
    12,871.20x = 141,423,859.85
  5. Step 5: Solve for x
    x = 141,423,859.85/12,871.20
  6. Step 6: Final answer
    x = 10,987.62

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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.