Home / 31,817.88-47,710.62-12,081.42

Finding the Fourth Proportional to 31,817.88, 47,710.62 and 12,081.42

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Solution

The fourth proportional to 31,817.88, 47,710.62 and 12,081.42 is: 18,115.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,817.88 : 47,710.62 = 12,081.42 : x
  2. Step 2: Convert to fraction form
    31,817.88/47,710.62 = 12,081.42/x
  3. Step 3: Cross multiply
    31,817.88x = 47,710.62 × 12,081.42
  4. Step 4: Simplify right side
    31,817.88x = 576,412,038.68
  5. Step 5: Solve for x
    x = 576,412,038.68/31,817.88
  6. Step 6: Final answer
    x = 18,115.98

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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.