Home / 21,101.67-31,668.05-10,008.39

Finding the Fourth Proportional to 21,101.67, 31,668.05 and 10,008.39

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Solution

The fourth proportional to 21,101.67, 31,668.05 and 10,008.39 is: 15,019.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.67 : 31,668.05 = 10,008.39 : x
  2. Step 2: Convert to fraction form
    21,101.67/31,668.05 = 10,008.39/x
  3. Step 3: Cross multiply
    21,101.67x = 31,668.05 × 10,008.39
  4. Step 4: Simplify right side
    21,101.67x = 316,946,194.94
  5. Step 5: Solve for x
    x = 316,946,194.94/21,101.67
  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.