Home / 20,937.94-31,408.43-6,898.09

Finding the Fourth Proportional to 20,937.94, 31,408.43 and 6,898.09

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Solution

The fourth proportional to 20,937.94, 31,408.43 and 6,898.09 is: 10,347.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.94 : 31,408.43 = 6,898.09 : x
  2. Step 2: Convert to fraction form
    20,937.94/31,408.43 = 6,898.09/x
  3. Step 3: Cross multiply
    20,937.94x = 31,408.43 × 6,898.09
  4. Step 4: Simplify right side
    20,937.94x = 216,658,092.64
  5. Step 5: Solve for x
    x = 216,658,092.64/20,937.94
  6. Step 6: Final answer
    x = 10,347.63

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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.