Home / 20,936.58-31,408.71-6,897.39

Finding the Fourth Proportional to 20,936.58, 31,408.71 and 6,897.39

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Solution

The fourth proportional to 20,936.58, 31,408.71 and 6,897.39 is: 10,347.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.58 : 31,408.71 = 6,897.39 : x
  2. Step 2: Convert to fraction form
    20,936.58/31,408.71 = 6,897.39/x
  3. Step 3: Cross multiply
    20,936.58x = 31,408.71 × 6,897.39
  4. Step 4: Simplify right side
    20,936.58x = 216,638,122.27
  5. Step 5: Solve for x
    x = 216,638,122.27/20,936.58
  6. Step 6: Final answer
    x = 10,347.35

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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.