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Finding the Fourth Proportional to 12,543.26, 18,815.63 and 9,023.60

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Solution

The fourth proportional to 12,543.26, 18,815.63 and 9,023.60 is: 13,535.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.26 : 18,815.63 = 9,023.60 : x
  2. Step 2: Convert to fraction form
    12,543.26/18,815.63 = 9,023.60/x
  3. Step 3: Cross multiply
    12,543.26x = 18,815.63 × 9,023.60
  4. Step 4: Simplify right side
    12,543.26x = 169,784,720.79
  5. Step 5: Solve for x
    x = 169,784,720.79/12,543.26
  6. Step 6: Final answer
    x = 13,535.94

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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.