Home / 31,988.05-47,982.07-11,211.55

Finding the Fourth Proportional to 31,988.05, 47,982.07 and 11,211.55

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Solution

The fourth proportional to 31,988.05, 47,982.07 and 11,211.55 is: 16,817.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,988.05 : 47,982.07 = 11,211.55 : x
  2. Step 2: Convert to fraction form
    31,988.05/47,982.07 = 11,211.55/x
  3. Step 3: Cross multiply
    31,988.05x = 47,982.07 × 11,211.55
  4. Step 4: Simplify right side
    31,988.05x = 537,953,376.91
  5. Step 5: Solve for x
    x = 537,953,376.91/31,988.05
  6. Step 6: Final answer
    x = 16,817.32

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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.