Home / 31,793.76-43,872-17,643.12

Finding the Fourth Proportional to 31,793.76, 43,872 and 17,643.12

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Solution

The fourth proportional to 31,793.76, 43,872 and 17,643.12 is: 24,345.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,793.76 : 43,872 = 17,643.12 : x
  2. Step 2: Convert to fraction form
    31,793.76/43,872 = 17,643.12/x
  3. Step 3: Cross multiply
    31,793.76x = 43,872 × 17,643.12
  4. Step 4: Simplify right side
    31,793.76x = 774,038,960.64
  5. Step 5: Solve for x
    x = 774,038,960.64/31,793.76
  6. Step 6: Final answer
    x = 24,345.63

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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.