Home / 20,788.64-31,183.06-6,748.30

Finding the Fourth Proportional to 20,788.64, 31,183.06 and 6,748.30

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Solution

The fourth proportional to 20,788.64, 31,183.06 and 6,748.30 is: 10,122.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.64 : 31,183.06 = 6,748.30 : x
  2. Step 2: Convert to fraction form
    20,788.64/31,183.06 = 6,748.30/x
  3. Step 3: Cross multiply
    20,788.64x = 31,183.06 × 6,748.30
  4. Step 4: Simplify right side
    20,788.64x = 210,432,643.80
  5. Step 5: Solve for x
    x = 210,432,643.80/20,788.64
  6. Step 6: Final answer
    x = 10,122.48

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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.