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Finding the Fourth Proportional to 19,403.60, 29,121.60 and 9,551.30

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Solution

The fourth proportional to 19,403.60, 29,121.60 and 9,551.30 is: 14,334.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,403.60 : 29,121.60 = 9,551.30 : x
  2. Step 2: Convert to fraction form
    19,403.60/29,121.60 = 9,551.30/x
  3. Step 3: Cross multiply
    19,403.60x = 29,121.60 × 9,551.30
  4. Step 4: Simplify right side
    19,403.60x = 278,149,138.08
  5. Step 5: Solve for x
    x = 278,149,138.08/19,403.60
  6. Step 6: Final answer
    x = 14,334.92

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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.