Home / 10,929.36-16,394.72-3,138.24

Finding the Fourth Proportional to 10,929.36, 16,394.72 and 3,138.24

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Solution

The fourth proportional to 10,929.36, 16,394.72 and 3,138.24 is: 4,707.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.36 : 16,394.72 = 3,138.24 : x
  2. Step 2: Convert to fraction form
    10,929.36/16,394.72 = 3,138.24/x
  3. Step 3: Cross multiply
    10,929.36x = 16,394.72 × 3,138.24
  4. Step 4: Simplify right side
    10,929.36x = 51,450,566.09
  5. Step 5: Solve for x
    x = 51,450,566.09/10,929.36
  6. Step 6: Final answer
    x = 4,707.56

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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.