Home / 11,179.24-15,434.12-7,405.65

Finding the Fourth Proportional to 11,179.24, 15,434.12 and 7,405.65

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Solution

The fourth proportional to 11,179.24, 15,434.12 and 7,405.65 is: 10,224.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,179.24 : 15,434.12 = 7,405.65 : x
  2. Step 2: Convert to fraction form
    11,179.24/15,434.12 = 7,405.65/x
  3. Step 3: Cross multiply
    11,179.24x = 15,434.12 × 7,405.65
  4. Step 4: Simplify right side
    11,179.24x = 114,299,690.78
  5. Step 5: Solve for x
    x = 114,299,690.78/11,179.24
  6. Step 6: Final answer
    x = 10,224.28

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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.