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Finding the Fourth Proportional to 18,590.20, 27,950.10 and 18,201.40

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Solution

The fourth proportional to 18,590.20, 27,950.10 and 18,201.40 is: 27,365.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,590.20 : 27,950.10 = 18,201.40 : x
  2. Step 2: Convert to fraction form
    18,590.20/27,950.10 = 18,201.40/x
  3. Step 3: Cross multiply
    18,590.20x = 27,950.10 × 18,201.40
  4. Step 4: Simplify right side
    18,590.20x = 508,730,950.14
  5. Step 5: Solve for x
    x = 508,730,950.14/18,590.20
  6. Step 6: Final answer
    x = 27,365.54

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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.