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Finding the Fourth Proportional to 25,780.81, 35,564.87 and 16,824.17

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Solution

The fourth proportional to 25,780.81, 35,564.87 and 16,824.17 is: 23,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,780.81 : 35,564.87 = 16,824.17 : x
  2. Step 2: Convert to fraction form
    25,780.81/35,564.87 = 16,824.17/x
  3. Step 3: Cross multiply
    25,780.81x = 35,564.87 × 16,824.17
  4. Step 4: Simplify right side
    25,780.81x = 598,349,334.79
  5. Step 5: Solve for x
    x = 598,349,334.79/25,780.81
  6. Step 6: Final answer
    x = 23,209.10

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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.