Home / 13,140.24-19,706.12-4,372.80

Finding the Fourth Proportional to 13,140.24, 19,706.12 and 4,372.80

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Solution

The fourth proportional to 13,140.24, 19,706.12 and 4,372.80 is: 6,557.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.24 : 19,706.12 = 4,372.80 : x
  2. Step 2: Convert to fraction form
    13,140.24/19,706.12 = 4,372.80/x
  3. Step 3: Cross multiply
    13,140.24x = 19,706.12 × 4,372.80
  4. Step 4: Simplify right side
    13,140.24x = 86,170,921.54
  5. Step 5: Solve for x
    x = 86,170,921.54/13,140.24
  6. Step 6: Final answer
    x = 6,557.79

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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.