Home / 20,453.15-30,679.76-5,662.11

Finding the Fourth Proportional to 20,453.15, 30,679.76 and 5,662.11

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Solution

The fourth proportional to 20,453.15, 30,679.76 and 5,662.11 is: 8,493.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.15 : 30,679.76 = 5,662.11 : x
  2. Step 2: Convert to fraction form
    20,453.15/30,679.76 = 5,662.11/x
  3. Step 3: Cross multiply
    20,453.15x = 30,679.76 × 5,662.11
  4. Step 4: Simplify right side
    20,453.15x = 173,712,305.10
  5. Step 5: Solve for x
    x = 173,712,305.10/20,453.15
  6. Step 6: Final answer
    x = 8,493.18

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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.