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Finding the Fourth Proportional to 18,150.80, 27,220.80 and 7,051.10

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Solution

The fourth proportional to 18,150.80, 27,220.80 and 7,051.10 is: 10,574.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,150.80 : 27,220.80 = 7,051.10 : x
  2. Step 2: Convert to fraction form
    18,150.80/27,220.80 = 7,051.10/x
  3. Step 3: Cross multiply
    18,150.80x = 27,220.80 × 7,051.10
  4. Step 4: Simplify right side
    18,150.80x = 191,936,582.88
  5. Step 5: Solve for x
    x = 191,936,582.88/18,150.80
  6. Step 6: Final answer
    x = 10,574.55

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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.