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Finding the Fourth Proportional to 25,121.76, 34,668.04 and 13,943.76

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Solution

The fourth proportional to 25,121.76, 34,668.04 and 13,943.76 is: 19,242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,121.76 : 34,668.04 = 13,943.76 : x
  2. Step 2: Convert to fraction form
    25,121.76/34,668.04 = 13,943.76/x
  3. Step 3: Cross multiply
    25,121.76x = 34,668.04 × 13,943.76
  4. Step 4: Simplify right side
    25,121.76x = 483,402,829.43
  5. Step 5: Solve for x
    x = 483,402,829.43/25,121.76
  6. Step 6: Final answer
    x = 19,242.40

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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.