Home / 25,634.42-38,447.79-21,279.86

Finding the Fourth Proportional to 25,634.42, 38,447.79 and 21,279.86

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Solution

The fourth proportional to 25,634.42, 38,447.79 and 21,279.86 is: 31,916.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,634.42 : 38,447.79 = 21,279.86 : x
  2. Step 2: Convert to fraction form
    25,634.42/38,447.79 = 21,279.86/x
  3. Step 3: Cross multiply
    25,634.42x = 38,447.79 × 21,279.86
  4. Step 4: Simplify right side
    25,634.42x = 818,163,588.51
  5. Step 5: Solve for x
    x = 818,163,588.51/25,634.42
  6. Step 6: Final answer
    x = 31,916.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.