Home / 21,101.66-31,668.05-10,008.38

Finding the Fourth Proportional to 21,101.66, 31,668.05 and 10,008.38

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Solution

The fourth proportional to 21,101.66, 31,668.05 and 10,008.38 is: 15,019.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.66 : 31,668.05 = 10,008.38 : x
  2. Step 2: Convert to fraction form
    21,101.66/31,668.05 = 10,008.38/x
  3. Step 3: Cross multiply
    21,101.66x = 31,668.05 × 10,008.38
  4. Step 4: Simplify right side
    21,101.66x = 316,945,982.45
  5. Step 5: Solve for x
    x = 316,945,982.45/21,101.66
  6. Step 6: Final answer
    x = 15,019.96

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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.