Home / 20,937.80-31,408.75-6,897.94

Finding the Fourth Proportional to 20,937.80, 31,408.75 and 6,897.94

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Solution

The fourth proportional to 20,937.80, 31,408.75 and 6,897.94 is: 10,347.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.80 : 31,408.75 = 6,897.94 : x
  2. Step 2: Convert to fraction form
    20,937.80/31,408.75 = 6,897.94/x
  3. Step 3: Cross multiply
    20,937.80x = 31,408.75 × 6,897.94
  4. Step 4: Simplify right side
    20,937.80x = 216,655,799.15
  5. Step 5: Solve for x
    x = 216,655,799.15/20,937.80
  6. Step 6: Final answer
    x = 10,347.59

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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.