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Finding the Fourth Proportional to 21,382.56, 32,076.48 and 7,345.44

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Solution

The fourth proportional to 21,382.56, 32,076.48 and 7,345.44 is: 11,019.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.56 : 32,076.48 = 7,345.44 : x
  2. Step 2: Convert to fraction form
    21,382.56/32,076.48 = 7,345.44/x
  3. Step 3: Cross multiply
    21,382.56x = 32,076.48 × 7,345.44
  4. Step 4: Simplify right side
    21,382.56x = 235,615,859.25
  5. Step 5: Solve for x
    x = 235,615,859.25/21,382.56
  6. Step 6: Final answer
    x = 11,019.07

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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.