Home / 20,943.42-28,902.52-11,991.84

Finding the Fourth Proportional to 20,943.42, 28,902.52 and 11,991.84

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Solution

The fourth proportional to 20,943.42, 28,902.52 and 11,991.84 is: 16,549.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.42 : 28,902.52 = 11,991.84 : x
  2. Step 2: Convert to fraction form
    20,943.42/28,902.52 = 11,991.84/x
  3. Step 3: Cross multiply
    20,943.42x = 28,902.52 × 11,991.84
  4. Step 4: Simplify right side
    20,943.42x = 346,594,395.44
  5. Step 5: Solve for x
    x = 346,594,395.44/20,943.42
  6. Step 6: Final answer
    x = 16,549.08

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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.