Home / 20,788.10-28,687.52-11,356.73

Finding the Fourth Proportional to 20,788.10, 28,687.52 and 11,356.73

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Solution

The fourth proportional to 20,788.10, 28,687.52 and 11,356.73 is: 15,672.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.10 : 28,687.52 = 11,356.73 : x
  2. Step 2: Convert to fraction form
    20,788.10/28,687.52 = 11,356.73/x
  3. Step 3: Cross multiply
    20,788.10x = 28,687.52 × 11,356.73
  4. Step 4: Simplify right side
    20,788.10x = 325,796,303.96
  5. Step 5: Solve for x
    x = 325,796,303.96/20,788.10
  6. Step 6: Final answer
    x = 15,672.25

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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.