Home / 21,905.58-32,860.20-9,425.88

Finding the Fourth Proportional to 21,905.58, 32,860.20 and 9,425.88

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Solution

The fourth proportional to 21,905.58, 32,860.20 and 9,425.88 is: 14,139.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.58 : 32,860.20 = 9,425.88 : x
  2. Step 2: Convert to fraction form
    21,905.58/32,860.20 = 9,425.88/x
  3. Step 3: Cross multiply
    21,905.58x = 32,860.20 × 9,425.88
  4. Step 4: Simplify right side
    21,905.58x = 309,736,301.98
  5. Step 5: Solve for x
    x = 309,736,301.98/21,905.58
  6. Step 6: Final answer
    x = 14,139.61

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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.