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Finding the Fourth Proportional to 22,393.66, 30,899.99 and 13,439.26

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Solution

The fourth proportional to 22,393.66, 30,899.99 and 13,439.26 is: 18,544.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,393.66 : 30,899.99 = 13,439.26 : x
  2. Step 2: Convert to fraction form
    22,393.66/30,899.99 = 13,439.26/x
  3. Step 3: Cross multiply
    22,393.66x = 30,899.99 × 13,439.26
  4. Step 4: Simplify right side
    22,393.66x = 415,272,999.61
  5. Step 5: Solve for x
    x = 415,272,999.61/22,393.66
  6. Step 6: Final answer
    x = 18,544.22

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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.