Home / 20,788.54-31,182.80-7,635.22

Finding the Fourth Proportional to 20,788.54, 31,182.80 and 7,635.22

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Solution

The fourth proportional to 20,788.54, 31,182.80 and 7,635.22 is: 11,452.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.54 : 31,182.80 = 7,635.22 : x
  2. Step 2: Convert to fraction form
    20,788.54/31,182.80 = 7,635.22/x
  3. Step 3: Cross multiply
    20,788.54x = 31,182.80 × 7,635.22
  4. Step 4: Simplify right side
    20,788.54x = 238,087,538.22
  5. Step 5: Solve for x
    x = 238,087,538.22/20,788.54
  6. Step 6: Final answer
    x = 11,452.83

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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.