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Finding the Fourth Proportional to 15,625.60, 21,563.04 and 8,551.88

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Solution

The fourth proportional to 15,625.60, 21,563.04 and 8,551.88 is: 11,801.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,625.60 : 21,563.04 = 8,551.88 : x
  2. Step 2: Convert to fraction form
    15,625.60/21,563.04 = 8,551.88/x
  3. Step 3: Cross multiply
    15,625.60x = 21,563.04 × 8,551.88
  4. Step 4: Simplify right side
    15,625.60x = 184,404,530.52
  5. Step 5: Solve for x
    x = 184,404,530.52/15,625.60
  6. Step 6: Final answer
    x = 11,801.44

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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.