Home / 20,886.60-31,326.30-7,732.20

Finding the Fourth Proportional to 20,886.60, 31,326.30 and 7,732.20

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Solution

The fourth proportional to 20,886.60, 31,326.30 and 7,732.20 is: 11,596.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.60 : 31,326.30 = 7,732.20 : x
  2. Step 2: Convert to fraction form
    20,886.60/31,326.30 = 7,732.20/x
  3. Step 3: Cross multiply
    20,886.60x = 31,326.30 × 7,732.20
  4. Step 4: Simplify right side
    20,886.60x = 242,221,216.86
  5. Step 5: Solve for x
    x = 242,221,216.86/20,886.60
  6. Step 6: Final answer
    x = 11,596.97

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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.