Home / 20,932.08-28,886.79-11,371.96

Finding the Fourth Proportional to 20,932.08, 28,886.79 and 11,371.96

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Solution

The fourth proportional to 20,932.08, 28,886.79 and 11,371.96 is: 15,693.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.08 : 28,886.79 = 11,371.96 : x
  2. Step 2: Convert to fraction form
    20,932.08/28,886.79 = 11,371.96/x
  3. Step 3: Cross multiply
    20,932.08x = 28,886.79 × 11,371.96
  4. Step 4: Simplify right side
    20,932.08x = 328,499,420.41
  5. Step 5: Solve for x
    x = 328,499,420.41/20,932.08
  6. Step 6: Final answer
    x = 15,693.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.