Home / 13,388.85-20,095.61-6,819.75

Finding the Fourth Proportional to 13,388.85, 20,095.61 and 6,819.75

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Solution

The fourth proportional to 13,388.85, 20,095.61 and 6,819.75 is: 10,235.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.85 : 20,095.61 = 6,819.75 : x
  2. Step 2: Convert to fraction form
    13,388.85/20,095.61 = 6,819.75/x
  3. Step 3: Cross multiply
    13,388.85x = 20,095.61 × 6,819.75
  4. Step 4: Simplify right side
    13,388.85x = 137,047,002.20
  5. Step 5: Solve for x
    x = 137,047,002.20/13,388.85
  6. Step 6: Final answer
    x = 10,235.91

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1.5x scale

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.