Home / 11,150.51-15,387.57-6,434.69

Finding the Fourth Proportional to 11,150.51, 15,387.57 and 6,434.69

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Solution

The fourth proportional to 11,150.51, 15,387.57 and 6,434.69 is: 8,879.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150.51 : 15,387.57 = 6,434.69 : x
  2. Step 2: Convert to fraction form
    11,150.51/15,387.57 = 6,434.69/x
  3. Step 3: Cross multiply
    11,150.51x = 15,387.57 × 6,434.69
  4. Step 4: Simplify right side
    11,150.51x = 99,014,165.87
  5. Step 5: Solve for x
    x = 99,014,165.87/11,150.51
  6. Step 6: Final answer
    x = 8,879.79

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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.