Home / 21,257.01-31,890.38-10,166.49

Finding the Fourth Proportional to 21,257.01, 31,890.38 and 10,166.49

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Solution

The fourth proportional to 21,257.01, 31,890.38 and 10,166.49 is: 15,252.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.01 : 31,890.38 = 10,166.49 : x
  2. Step 2: Convert to fraction form
    21,257.01/31,890.38 = 10,166.49/x
  3. Step 3: Cross multiply
    21,257.01x = 31,890.38 × 10,166.49
  4. Step 4: Simplify right side
    21,257.01x = 324,213,178.53
  5. Step 5: Solve for x
    x = 324,213,178.53/21,257.01
  6. Step 6: Final answer
    x = 15,252.06

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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.