Home / 20,788.64-31,182.68-7,635.92

Finding the Fourth Proportional to 20,788.64, 31,182.68 and 7,635.92

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Solution

The fourth proportional to 20,788.64, 31,182.68 and 7,635.92 is: 11,453.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.64 : 31,182.68 = 7,635.92 : x
  2. Step 2: Convert to fraction form
    20,788.64/31,182.68 = 7,635.92/x
  3. Step 3: Cross multiply
    20,788.64x = 31,182.68 × 7,635.92
  4. Step 4: Simplify right side
    20,788.64x = 238,108,449.87
  5. Step 5: Solve for x
    x = 238,108,449.87/20,788.64
  6. Step 6: Final answer
    x = 11,453.78

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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.