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Finding the Fourth Proportional to 25,980, 35,855.91 and 14,651.82

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Solution

The fourth proportional to 25,980, 35,855.91 and 14,651.82 is: 20,221.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,980 : 35,855.91 = 14,651.82 : x
  2. Step 2: Convert to fraction form
    25,980/35,855.91 = 14,651.82/x
  3. Step 3: Cross multiply
    25,980x = 35,855.91 × 14,651.82
  4. Step 4: Simplify right side
    25,980x = 525,354,339.26
  5. Step 5: Solve for x
    x = 525,354,339.26/25,980
  6. Step 6: Final answer
    x = 20,221.49

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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.