Home / 20,760.24-31,142.04-8,755.84

Finding the Fourth Proportional to 20,760.24, 31,142.04 and 8,755.84

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Solution

The fourth proportional to 20,760.24, 31,142.04 and 8,755.84 is: 13,134.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.24 : 31,142.04 = 8,755.84 : x
  2. Step 2: Convert to fraction form
    20,760.24/31,142.04 = 8,755.84/x
  3. Step 3: Cross multiply
    20,760.24x = 31,142.04 × 8,755.84
  4. Step 4: Simplify right side
    20,760.24x = 272,674,719.51
  5. Step 5: Solve for x
    x = 272,674,719.51/20,760.24
  6. Step 6: Final answer
    x = 13,134.47

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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.