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Finding the Fourth Proportional to 14,887.32, 20,546.64 and 8,919.24

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Solution

The fourth proportional to 14,887.32, 20,546.64 and 8,919.24 is: 12,309.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,887.32 : 20,546.64 = 8,919.24 : x
  2. Step 2: Convert to fraction form
    14,887.32/20,546.64 = 8,919.24/x
  3. Step 3: Cross multiply
    14,887.32x = 20,546.64 × 8,919.24
  4. Step 4: Simplify right side
    14,887.32x = 183,260,413.35
  5. Step 5: Solve for x
    x = 183,260,413.35/14,887.32
  6. Step 6: Final answer
    x = 12,309.83

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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.