Home / 20,808.95-31,213.15-5,226.57

Finding the Fourth Proportional to 20,808.95, 31,213.15 and 5,226.57

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Solution

The fourth proportional to 20,808.95, 31,213.15 and 5,226.57 is: 7,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808.95 : 31,213.15 = 5,226.57 : x
  2. Step 2: Convert to fraction form
    20,808.95/31,213.15 = 5,226.57/x
  3. Step 3: Cross multiply
    20,808.95x = 31,213.15 × 5,226.57
  4. Step 4: Simplify right side
    20,808.95x = 163,137,700.33
  5. Step 5: Solve for x
    x = 163,137,700.33/20,808.95
  6. Step 6: Final answer
    x = 7,839.79

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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.