Home / 21,199.32-31,799.16-6,408.90

Finding the Fourth Proportional to 21,199.32, 31,799.16 and 6,408.90

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Solution

The fourth proportional to 21,199.32, 31,799.16 and 6,408.90 is: 9,613.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199.32 : 31,799.16 = 6,408.90 : x
  2. Step 2: Convert to fraction form
    21,199.32/31,799.16 = 6,408.90/x
  3. Step 3: Cross multiply
    21,199.32x = 31,799.16 × 6,408.90
  4. Step 4: Simplify right side
    21,199.32x = 203,797,636.52
  5. Step 5: Solve for x
    x = 203,797,636.52/21,199.32
  6. Step 6: Final answer
    x = 9,613.40

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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.