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Finding the Fourth Proportional to 25,865.88, 35,700.12 and 16,897.20

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Solution

The fourth proportional to 25,865.88, 35,700.12 and 16,897.20 is: 23,321.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,865.88 : 35,700.12 = 16,897.20 : x
  2. Step 2: Convert to fraction form
    25,865.88/35,700.12 = 16,897.20/x
  3. Step 3: Cross multiply
    25,865.88x = 35,700.12 × 16,897.20
  4. Step 4: Simplify right side
    25,865.88x = 603,232,067.66
  5. Step 5: Solve for x
    x = 603,232,067.66/25,865.88
  6. Step 6: Final answer
    x = 23,321.54

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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.