Home / 10,928.80-16,393.20-3,138.24

Finding the Fourth Proportional to 10,928.80, 16,393.20 and 3,138.24

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Solution

The fourth proportional to 10,928.80, 16,393.20 and 3,138.24 is: 4,707.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,928.80 : 16,393.20 = 3,138.24 : x
  2. Step 2: Convert to fraction form
    10,928.80/16,393.20 = 3,138.24/x
  3. Step 3: Cross multiply
    10,928.80x = 16,393.20 × 3,138.24
  4. Step 4: Simplify right side
    10,928.80x = 51,445,795.97
  5. Step 5: Solve for x
    x = 51,445,795.97/10,928.80
  6. Step 6: Final answer
    x = 4,707.36

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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.