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Finding the Fourth Proportional to 21,468.88, 32,203.41 and 8,980.15

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Solution

The fourth proportional to 21,468.88, 32,203.41 and 8,980.15 is: 13,470.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,468.88 : 32,203.41 = 8,980.15 : x
  2. Step 2: Convert to fraction form
    21,468.88/32,203.41 = 8,980.15/x
  3. Step 3: Cross multiply
    21,468.88x = 32,203.41 × 8,980.15
  4. Step 4: Simplify right side
    21,468.88x = 289,191,452.31
  5. Step 5: Solve for x
    x = 289,191,452.31/21,468.88
  6. Step 6: Final answer
    x = 13,470.26

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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.