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Finding the Fourth Proportional to 18,605.58, 25,680.24 and 11,437.26

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Solution

The fourth proportional to 18,605.58, 25,680.24 and 11,437.26 is: 15,786.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.58 : 25,680.24 = 11,437.26 : x
  2. Step 2: Convert to fraction form
    18,605.58/25,680.24 = 11,437.26/x
  3. Step 3: Cross multiply
    18,605.58x = 25,680.24 × 11,437.26
  4. Step 4: Simplify right side
    18,605.58x = 293,711,581.74
  5. Step 5: Solve for x
    x = 293,711,581.74/18,605.58
  6. Step 6: Final answer
    x = 15,786.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.