Home / 31,981.84-47,973.06-12,255.70

Finding the Fourth Proportional to 31,981.84, 47,973.06 and 12,255.70

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Solution

The fourth proportional to 31,981.84, 47,973.06 and 12,255.70 is: 18,383.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,981.84 : 47,973.06 = 12,255.70 : x
  2. Step 2: Convert to fraction form
    31,981.84/47,973.06 = 12,255.70/x
  3. Step 3: Cross multiply
    31,981.84x = 47,973.06 × 12,255.70
  4. Step 4: Simplify right side
    31,981.84x = 587,943,431.44
  5. Step 5: Solve for x
    x = 587,943,431.44/31,981.84
  6. Step 6: Final answer
    x = 18,383.66

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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.