Home / 27,900.80-41,812.32-20,967.20

Finding the Fourth Proportional to 27,900.80, 41,812.32 and 20,967.20

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Solution

The fourth proportional to 27,900.80, 41,812.32 and 20,967.20 is: 31,421.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,900.80 : 41,812.32 = 20,967.20 : x
  2. Step 2: Convert to fraction form
    27,900.80/41,812.32 = 20,967.20/x
  3. Step 3: Cross multiply
    27,900.80x = 41,812.32 × 20,967.20
  4. Step 4: Simplify right side
    27,900.80x = 876,687,275.90
  5. Step 5: Solve for x
    x = 876,687,275.90/27,900.80
  6. Step 6: Final answer
    x = 31,421.58

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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.