Home / 13,320.80-19,965.20-5,525.60

Finding the Fourth Proportional to 13,320.80, 19,965.20 and 5,525.60

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Solution

The fourth proportional to 13,320.80, 19,965.20 and 5,525.60 is: 8,281.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.80 : 19,965.20 = 5,525.60 : x
  2. Step 2: Convert to fraction form
    13,320.80/19,965.20 = 5,525.60/x
  3. Step 3: Cross multiply
    13,320.80x = 19,965.20 × 5,525.60
  4. Step 4: Simplify right side
    13,320.80x = 110,319,709.12
  5. Step 5: Solve for x
    x = 110,319,709.12/13,320.80
  6. Step 6: Final answer
    x = 8,281.76

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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.