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Finding the Fourth Proportional to 55,028.80, 82,542.16 and 13,476.16

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Solution

The fourth proportional to 55,028.80, 82,542.16 and 13,476.16 is: 20,213.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,028.80 : 82,542.16 = 13,476.16 : x
  2. Step 2: Convert to fraction form
    55,028.80/82,542.16 = 13,476.16/x
  3. Step 3: Cross multiply
    55,028.80x = 82,542.16 × 13,476.16
  4. Step 4: Simplify right side
    55,028.80x = 1,112,351,354.91
  5. Step 5: Solve for x
    x = 1,112,351,354.91/55,028.80
  6. Step 6: Final answer
    x = 20,213.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.