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Finding the Fourth Proportional to 12,043.48, 18,065.24 and 7,909.60

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Solution

The fourth proportional to 12,043.48, 18,065.24 and 7,909.60 is: 11,864.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,043.48 : 18,065.24 = 7,909.60 : x
  2. Step 2: Convert to fraction form
    12,043.48/18,065.24 = 7,909.60/x
  3. Step 3: Cross multiply
    12,043.48x = 18,065.24 × 7,909.60
  4. Step 4: Simplify right side
    12,043.48x = 142,888,822.30
  5. Step 5: Solve for x
    x = 142,888,822.30/12,043.48
  6. Step 6: Final answer
    x = 11,864.41

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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.