Home / 31,979.15-47,968.76-9,789.66

Finding the Fourth Proportional to 31,979.15, 47,968.76 and 9,789.66

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Solution

The fourth proportional to 31,979.15, 47,968.76 and 9,789.66 is: 14,684.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,979.15 : 47,968.76 = 9,789.66 : x
  2. Step 2: Convert to fraction form
    31,979.15/47,968.76 = 9,789.66/x
  3. Step 3: Cross multiply
    31,979.15x = 47,968.76 × 9,789.66
  4. Step 4: Simplify right side
    31,979.15x = 469,597,820.43
  5. Step 5: Solve for x
    x = 469,597,820.43/31,979.15
  6. Step 6: Final answer
    x = 14,684.50

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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.