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Finding the Fourth Proportional to 25,389, 35,036.82 and 14,211

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Solution

The fourth proportional to 25,389, 35,036.82 and 14,211 is: 19,611.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,389 : 35,036.82 = 14,211 : x
  2. Step 2: Convert to fraction form
    25,389/35,036.82 = 14,211/x
  3. Step 3: Cross multiply
    25,389x = 35,036.82 × 14,211
  4. Step 4: Simplify right side
    25,389x = 497,908,249.02
  5. Step 5: Solve for x
    x = 497,908,249.02/25,389
  6. Step 6: Final answer
    x = 19,611.18

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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.