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Finding the Fourth Proportional to 25,554.51, 38,318.80 and 11,691.63

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Solution

The fourth proportional to 25,554.51, 38,318.80 and 11,691.63 is: 17,531.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,554.51 : 38,318.80 = 11,691.63 : x
  2. Step 2: Convert to fraction form
    25,554.51/38,318.80 = 11,691.63/x
  3. Step 3: Cross multiply
    25,554.51x = 38,318.80 × 11,691.63
  4. Step 4: Simplify right side
    25,554.51x = 448,009,010.82
  5. Step 5: Solve for x
    x = 448,009,010.82/25,554.51
  6. Step 6: Final answer
    x = 17,531.51

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.