Home / 20,994.52-28,972.44-11,563.09

Finding the Fourth Proportional to 20,994.52, 28,972.44 and 11,563.09

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Solution

The fourth proportional to 20,994.52, 28,972.44 and 11,563.09 is: 15,957.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.52 : 28,972.44 = 11,563.09 : x
  2. Step 2: Convert to fraction form
    20,994.52/28,972.44 = 11,563.09/x
  3. Step 3: Cross multiply
    20,994.52x = 28,972.44 × 11,563.09
  4. Step 4: Simplify right side
    20,994.52x = 335,010,931.24
  5. Step 5: Solve for x
    x = 335,010,931.24/20,994.52
  6. Step 6: Final answer
    x = 15,957.07

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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.