Home / 20,691.58-28,554.45-11,260.18

Finding the Fourth Proportional to 20,691.58, 28,554.45 and 11,260.18

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Solution

The fourth proportional to 20,691.58, 28,554.45 and 11,260.18 is: 15,539.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.58 : 28,554.45 = 11,260.18 : x
  2. Step 2: Convert to fraction form
    20,691.58/28,554.45 = 11,260.18/x
  3. Step 3: Cross multiply
    20,691.58x = 28,554.45 × 11,260.18
  4. Step 4: Simplify right side
    20,691.58x = 321,528,246.80
  5. Step 5: Solve for x
    x = 321,528,246.80/20,691.58
  6. Step 6: Final answer
    x = 15,539.09

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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.