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Finding the Fourth Proportional to 32,879.38, 45,362.44 and 18,722.20

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Solution

The fourth proportional to 32,879.38, 45,362.44 and 18,722.20 is: 25,830.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,879.38 : 45,362.44 = 18,722.20 : x
  2. Step 2: Convert to fraction form
    32,879.38/45,362.44 = 18,722.20/x
  3. Step 3: Cross multiply
    32,879.38x = 45,362.44 × 18,722.20
  4. Step 4: Simplify right side
    32,879.38x = 849,284,580.56
  5. Step 5: Solve for x
    x = 849,284,580.56/32,879.38
  6. Step 6: Final answer
    x = 25,830.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.