Home / 21,325.35-31,974.33-8,853.98

Finding the Fourth Proportional to 21,325.35, 31,974.33 and 8,853.98

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Solution

The fourth proportional to 21,325.35, 31,974.33 and 8,853.98 is: 13,275.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.35 : 31,974.33 = 8,853.98 : x
  2. Step 2: Convert to fraction form
    21,325.35/31,974.33 = 8,853.98/x
  3. Step 3: Cross multiply
    21,325.35x = 31,974.33 × 8,853.98
  4. Step 4: Simplify right side
    21,325.35x = 283,100,071.57
  5. Step 5: Solve for x
    x = 283,100,071.57/21,325.35
  6. Step 6: Final answer
    x = 13,275.29

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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.