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Finding the Fourth Proportional to 12,597.60, 18,867.20 and 11,190.72

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Solution

The fourth proportional to 12,597.60, 18,867.20 and 11,190.72 is: 16,760.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,597.60 : 18,867.20 = 11,190.72 : x
  2. Step 2: Convert to fraction form
    12,597.60/18,867.20 = 11,190.72/x
  3. Step 3: Cross multiply
    12,597.60x = 18,867.20 × 11,190.72
  4. Step 4: Simplify right side
    12,597.60x = 211,137,552.38
  5. Step 5: Solve for x
    x = 211,137,552.38/12,597.60
  6. Step 6: Final answer
    x = 16,760.14

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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.