Home / 30,393.13-41,961.78-20,849.01

Finding the Fourth Proportional to 30,393.13, 41,961.78 and 20,849.01

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Solution

The fourth proportional to 30,393.13, 41,961.78 and 20,849.01 is: 28,784.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,393.13 : 41,961.78 = 20,849.01 : x
  2. Step 2: Convert to fraction form
    30,393.13/41,961.78 = 20,849.01/x
  3. Step 3: Cross multiply
    30,393.13x = 41,961.78 × 20,849.01
  4. Step 4: Simplify right side
    30,393.13x = 874,861,570.84
  5. Step 5: Solve for x
    x = 874,861,570.84/30,393.13
  6. Step 6: Final answer
    x = 28,784.85

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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.