Home / 13,803.80-20,690.96-5,480.24

Finding the Fourth Proportional to 13,803.80, 20,690.96 and 5,480.24

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Solution

The fourth proportional to 13,803.80, 20,690.96 and 5,480.24 is: 8,214.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.80 : 20,690.96 = 5,480.24 : x
  2. Step 2: Convert to fraction form
    13,803.80/20,690.96 = 5,480.24/x
  3. Step 3: Cross multiply
    13,803.80x = 20,690.96 × 5,480.24
  4. Step 4: Simplify right side
    13,803.80x = 113,391,426.63
  5. Step 5: Solve for x
    x = 113,391,426.63/13,803.80
  6. Step 6: Final answer
    x = 8,214.51

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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.