Home / 30,972.97-42,777.83-20,884.01

Finding the Fourth Proportional to 30,972.97, 42,777.83 and 20,884.01

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Solution

The fourth proportional to 30,972.97, 42,777.83 and 20,884.01 is: 28,843.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,972.97 : 42,777.83 = 20,884.01 : x
  2. Step 2: Convert to fraction form
    30,972.97/42,777.83 = 20,884.01/x
  3. Step 3: Cross multiply
    30,972.97x = 42,777.83 × 20,884.01
  4. Step 4: Simplify right side
    30,972.97x = 893,372,525.08
  5. Step 5: Solve for x
    x = 893,372,525.08/30,972.97
  6. Step 6: Final answer
    x = 28,843.62

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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.