Home / 15,525.28-21,425.04-8,900

Finding the Fourth Proportional to 15,525.28, 21,425.04 and 8,900

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Solution

The fourth proportional to 15,525.28, 21,425.04 and 8,900 is: 12,282.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,525.28 : 21,425.04 = 8,900 : x
  2. Step 2: Convert to fraction form
    15,525.28/21,425.04 = 8,900/x
  3. Step 3: Cross multiply
    15,525.28x = 21,425.04 × 8,900
  4. Step 4: Simplify right side
    15,525.28x = 190,682,856
  5. Step 5: Solve for x
    x = 190,682,856/15,525.28
  6. Step 6: Final answer
    x = 12,282.09

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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.