Home / 25,819.80-38,735.10-8,291.40

Finding the Fourth Proportional to 25,819.80, 38,735.10 and 8,291.40

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Solution

The fourth proportional to 25,819.80, 38,735.10 and 8,291.40 is: 12,438.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,819.80 : 38,735.10 = 8,291.40 : x
  2. Step 2: Convert to fraction form
    25,819.80/38,735.10 = 8,291.40/x
  3. Step 3: Cross multiply
    25,819.80x = 38,735.10 × 8,291.40
  4. Step 4: Simplify right side
    25,819.80x = 321,168,208.14
  5. Step 5: Solve for x
    x = 321,168,208.14/25,819.80
  6. Step 6: Final answer
    x = 12,438.83

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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.