Home / 31,318.68-43,206.12-20,723.04

Finding the Fourth Proportional to 31,318.68, 43,206.12 and 20,723.04

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Solution

The fourth proportional to 31,318.68, 43,206.12 and 20,723.04 is: 28,588.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,318.68 : 43,206.12 = 20,723.04 : x
  2. Step 2: Convert to fraction form
    31,318.68/43,206.12 = 20,723.04/x
  3. Step 3: Cross multiply
    31,318.68x = 43,206.12 × 20,723.04
  4. Step 4: Simplify right side
    31,318.68x = 895,362,153.00
  5. Step 5: Solve for x
    x = 895,362,153.00/31,318.68
  6. Step 6: Final answer
    x = 28,588.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.