Home / 10,929.10-16,393.74-3,138.16

Finding the Fourth Proportional to 10,929.10, 16,393.74 and 3,138.16

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Solution

The fourth proportional to 10,929.10, 16,393.74 and 3,138.16 is: 4,707.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.10 : 16,393.74 = 3,138.16 : x
  2. Step 2: Convert to fraction form
    10,929.10/16,393.74 = 3,138.16/x
  3. Step 3: Cross multiply
    10,929.10x = 16,393.74 × 3,138.16
  4. Step 4: Simplify right side
    10,929.10x = 51,446,179.12
  5. Step 5: Solve for x
    x = 51,446,179.12/10,929.10
  6. Step 6: Final answer
    x = 4,707.27

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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.