Home / 11,107.56-15,330.92-7,579.20

Finding the Fourth Proportional to 11,107.56, 15,330.92 and 7,579.20

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Solution

The fourth proportional to 11,107.56, 15,330.92 and 7,579.20 is: 10,460.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,107.56 : 15,330.92 = 7,579.20 : x
  2. Step 2: Convert to fraction form
    11,107.56/15,330.92 = 7,579.20/x
  3. Step 3: Cross multiply
    11,107.56x = 15,330.92 × 7,579.20
  4. Step 4: Simplify right side
    11,107.56x = 116,196,108.86
  5. Step 5: Solve for x
    x = 116,196,108.86/11,107.56
  6. Step 6: Final answer
    x = 10,460.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.