Home / 13,799.12-20,700.92-5,479.16

Finding the Fourth Proportional to 13,799.12, 20,700.92 and 5,479.16

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Solution

The fourth proportional to 13,799.12, 20,700.92 and 5,479.16 is: 8,219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799.12 : 20,700.92 = 5,479.16 : x
  2. Step 2: Convert to fraction form
    13,799.12/20,700.92 = 5,479.16/x
  3. Step 3: Cross multiply
    13,799.12x = 20,700.92 × 5,479.16
  4. Step 4: Simplify right side
    13,799.12x = 113,423,652.83
  5. Step 5: Solve for x
    x = 113,423,652.83/13,799.12
  6. Step 6: Final answer
    x = 8,219.63

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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.