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Finding the Fourth Proportional to 9,000.60, 12,462.30 and 8,539.80

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Solution

The fourth proportional to 9,000.60, 12,462.30 and 8,539.80 is: 11,824.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.60 : 12,462.30 = 8,539.80 : x
  2. Step 2: Convert to fraction form
    9,000.60/12,462.30 = 8,539.80/x
  3. Step 3: Cross multiply
    9,000.60x = 12,462.30 × 8,539.80
  4. Step 4: Simplify right side
    9,000.60x = 106,425,549.54
  5. Step 5: Solve for x
    x = 106,425,549.54/9,000.60
  6. Step 6: Final answer
    x = 11,824.27

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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.