Home / 21,001.26-31,408.94-18,677.57

Finding the Fourth Proportional to 21,001.26, 31,408.94 and 18,677.57

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Solution

The fourth proportional to 21,001.26, 31,408.94 and 18,677.57 is: 27,933.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.26 : 31,408.94 = 18,677.57 : x
  2. Step 2: Convert to fraction form
    21,001.26/31,408.94 = 18,677.57/x
  3. Step 3: Cross multiply
    21,001.26x = 31,408.94 × 18,677.57
  4. Step 4: Simplify right side
    21,001.26x = 586,642,425.04
  5. Step 5: Solve for x
    x = 586,642,425.04/21,001.26
  6. Step 6: Final answer
    x = 27,933.68

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1.5x scale

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.