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Finding the Fourth Proportional to 25,770.90, 35,580.90 and 19,791.84

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Solution

The fourth proportional to 25,770.90, 35,580.90 and 19,791.84 is: 27,325.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,770.90 : 35,580.90 = 19,791.84 : x
  2. Step 2: Convert to fraction form
    25,770.90/35,580.90 = 19,791.84/x
  3. Step 3: Cross multiply
    25,770.90x = 35,580.90 × 19,791.84
  4. Step 4: Simplify right side
    25,770.90x = 704,211,479.86
  5. Step 5: Solve for x
    x = 704,211,479.86/25,770.90
  6. Step 6: Final answer
    x = 27,325.84

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1.5x scale

Why These Related Problems?

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