Home / 31,988.07-47,982.10-11,211.57

Finding the Fourth Proportional to 31,988.07, 47,982.10 and 11,211.57

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Solution

The fourth proportional to 31,988.07, 47,982.10 and 11,211.57 is: 16,817.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,988.07 : 47,982.10 = 11,211.57 : x
  2. Step 2: Convert to fraction form
    31,988.07/47,982.10 = 11,211.57/x
  3. Step 3: Cross multiply
    31,988.07x = 47,982.10 × 11,211.57
  4. Step 4: Simplify right side
    31,988.07x = 537,954,376.93
  5. Step 5: Solve for x
    x = 537,954,376.93/31,988.07
  6. Step 6: Final answer
    x = 16,817.35

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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.