Home / 27,327.90-40,979.70-12,529.20

Finding the Fourth Proportional to 27,327.90, 40,979.70 and 12,529.20

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Solution

The fourth proportional to 27,327.90, 40,979.70 and 12,529.20 is: 18,788.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,327.90 : 40,979.70 = 12,529.20 : x
  2. Step 2: Convert to fraction form
    27,327.90/40,979.70 = 12,529.20/x
  3. Step 3: Cross multiply
    27,327.90x = 40,979.70 × 12,529.20
  4. Step 4: Simplify right side
    27,327.90x = 513,442,857.24
  5. Step 5: Solve for x
    x = 513,442,857.24/27,327.90
  6. Step 6: Final answer
    x = 18,788.23

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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.