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Finding the Fourth Proportional to 11,393.81, 15,726.75 and 6,614.82

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Solution

The fourth proportional to 11,393.81, 15,726.75 and 6,614.82 is: 9,130.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,393.81 : 15,726.75 = 6,614.82 : x
  2. Step 2: Convert to fraction form
    11,393.81/15,726.75 = 6,614.82/x
  3. Step 3: Cross multiply
    11,393.81x = 15,726.75 × 6,614.82
  4. Step 4: Simplify right side
    11,393.81x = 104,029,620.44
  5. Step 5: Solve for x
    x = 104,029,620.44/11,393.81
  6. Step 6: Final answer
    x = 9,130.37

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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.