Home / 13,140.24-19,710.12-3,279.60

Finding the Fourth Proportional to 13,140.24, 19,710.12 and 3,279.60

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Solution

The fourth proportional to 13,140.24, 19,710.12 and 3,279.60 is: 4,919.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.24 : 19,710.12 = 3,279.60 : x
  2. Step 2: Convert to fraction form
    13,140.24/19,710.12 = 3,279.60/x
  3. Step 3: Cross multiply
    13,140.24x = 19,710.12 × 3,279.60
  4. Step 4: Simplify right side
    13,140.24x = 64,641,309.55
  5. Step 5: Solve for x
    x = 64,641,309.55/13,140.24
  6. Step 6: Final answer
    x = 4,919.34

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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.