Home / 13,820.07-20,713.88-6,408.92

Finding the Fourth Proportional to 13,820.07, 20,713.88 and 6,408.92

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Solution

The fourth proportional to 13,820.07, 20,713.88 and 6,408.92 is: 9,605.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.07 : 20,713.88 = 6,408.92 : x
  2. Step 2: Convert to fraction form
    13,820.07/20,713.88 = 6,408.92/x
  3. Step 3: Cross multiply
    13,820.07x = 20,713.88 × 6,408.92
  4. Step 4: Simplify right side
    13,820.07x = 132,753,631.57
  5. Step 5: Solve for x
    x = 132,753,631.57/13,820.07
  6. Step 6: Final answer
    x = 9,605.86

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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.