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Finding the Fourth Proportional to 18,393.38, 27,590.47 and 4,542.38

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Solution

The fourth proportional to 18,393.38, 27,590.47 and 4,542.38 is: 6,813.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.38 : 27,590.47 = 4,542.38 : x
  2. Step 2: Convert to fraction form
    18,393.38/27,590.47 = 4,542.38/x
  3. Step 3: Cross multiply
    18,393.38x = 27,590.47 × 4,542.38
  4. Step 4: Simplify right side
    18,393.38x = 125,326,399.12
  5. Step 5: Solve for x
    x = 125,326,399.12/18,393.38
  6. Step 6: Final answer
    x = 6,813.67

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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.