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Finding the Fourth Proportional to 25,131.90, 34,670.04 and 15,055.50

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Solution

The fourth proportional to 25,131.90, 34,670.04 and 15,055.50 is: 20,769.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,131.90 : 34,670.04 = 15,055.50 : x
  2. Step 2: Convert to fraction form
    25,131.90/34,670.04 = 15,055.50/x
  3. Step 3: Cross multiply
    25,131.90x = 34,670.04 × 15,055.50
  4. Step 4: Simplify right side
    25,131.90x = 521,974,787.22
  5. Step 5: Solve for x
    x = 521,974,787.22/25,131.90
  6. Step 6: Final answer
    x = 20,769.41

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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.