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Finding the Fourth Proportional to 9,021.60, 13,564.80 and 8,827.20

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Solution

The fourth proportional to 9,021.60, 13,564.80 and 8,827.20 is: 13,272.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,021.60 : 13,564.80 = 8,827.20 : x
  2. Step 2: Convert to fraction form
    9,021.60/13,564.80 = 8,827.20/x
  3. Step 3: Cross multiply
    9,021.60x = 13,564.80 × 8,827.20
  4. Step 4: Simplify right side
    9,021.60x = 119,739,202.56
  5. Step 5: Solve for x
    x = 119,739,202.56/9,021.60
  6. Step 6: Final answer
    x = 13,272.50

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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.