Home / 13,200.12-19,792.80-5,414.40

Finding the Fourth Proportional to 13,200.12, 19,792.80 and 5,414.40

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Solution

The fourth proportional to 13,200.12, 19,792.80 and 5,414.40 is: 8,118.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.12 : 19,792.80 = 5,414.40 : x
  2. Step 2: Convert to fraction form
    13,200.12/19,792.80 = 5,414.40/x
  3. Step 3: Cross multiply
    13,200.12x = 19,792.80 × 5,414.40
  4. Step 4: Simplify right side
    13,200.12x = 107,166,136.32
  5. Step 5: Solve for x
    x = 107,166,136.32/13,200.12
  6. Step 6: Final answer
    x = 8,118.57

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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.