Home / 13,188.20-19,782.30-3,954.20

Finding the Fourth Proportional to 13,188.20, 19,782.30 and 3,954.20

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Solution

The fourth proportional to 13,188.20, 19,782.30 and 3,954.20 is: 5,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.20 : 19,782.30 = 3,954.20 : x
  2. Step 2: Convert to fraction form
    13,188.20/19,782.30 = 3,954.20/x
  3. Step 3: Cross multiply
    13,188.20x = 19,782.30 × 3,954.20
  4. Step 4: Simplify right side
    13,188.20x = 78,223,170.66
  5. Step 5: Solve for x
    x = 78,223,170.66/13,188.20
  6. Step 6: Final answer
    x = 5,931.30

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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.