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Finding the Fourth Proportional to 18,051.80, 27,048.90 and 15,114.20

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Solution

The fourth proportional to 18,051.80, 27,048.90 and 15,114.20 is: 22,647.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,051.80 : 27,048.90 = 15,114.20 : x
  2. Step 2: Convert to fraction form
    18,051.80/27,048.90 = 15,114.20/x
  3. Step 3: Cross multiply
    18,051.80x = 27,048.90 × 15,114.20
  4. Step 4: Simplify right side
    18,051.80x = 408,822,484.38
  5. Step 5: Solve for x
    x = 408,822,484.38/18,051.80
  6. Step 6: Final answer
    x = 22,647.19

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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.