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Finding the Fourth Proportional to 21,608.10, 32,411.07 and 7,563.78

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Solution

The fourth proportional to 21,608.10, 32,411.07 and 7,563.78 is: 11,345.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,608.10 : 32,411.07 = 7,563.78 : x
  2. Step 2: Convert to fraction form
    21,608.10/32,411.07 = 7,563.78/x
  3. Step 3: Cross multiply
    21,608.10x = 32,411.07 × 7,563.78
  4. Step 4: Simplify right side
    21,608.10x = 245,150,203.04
  5. Step 5: Solve for x
    x = 245,150,203.04/21,608.10
  6. Step 6: Final answer
    x = 11,345.29

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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.