Home / 31,979.12-47,984.88-21,569

Finding the Fourth Proportional to 31,979.12, 47,984.88 and 21,569

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Solution

The fourth proportional to 31,979.12, 47,984.88 and 21,569 is: 32,364.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,979.12 : 47,984.88 = 21,569 : x
  2. Step 2: Convert to fraction form
    31,979.12/47,984.88 = 21,569/x
  3. Step 3: Cross multiply
    31,979.12x = 47,984.88 × 21,569
  4. Step 4: Simplify right side
    31,979.12x = 1,034,985,876.72
  5. Step 5: Solve for x
    x = 1,034,985,876.72/31,979.12
  6. Step 6: Final answer
    x = 32,364.43

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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.