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Finding the Fourth Proportional to 11,471.51, 15,829.72 and 6,435.03

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Solution

The fourth proportional to 11,471.51, 15,829.72 and 6,435.03 is: 8,879.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,471.51 : 15,829.72 = 6,435.03 : x
  2. Step 2: Convert to fraction form
    11,471.51/15,829.72 = 6,435.03/x
  3. Step 3: Cross multiply
    11,471.51x = 15,829.72 × 6,435.03
  4. Step 4: Simplify right side
    11,471.51x = 101,864,723.09
  5. Step 5: Solve for x
    x = 101,864,723.09/11,471.51
  6. Step 6: Final answer
    x = 8,879.80

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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.