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Finding the Fourth Proportional to 14,867.68, 20,518.32 and 8,243.68

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Solution

The fourth proportional to 14,867.68, 20,518.32 and 8,243.68 is: 11,376.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,867.68 : 20,518.32 = 8,243.68 : x
  2. Step 2: Convert to fraction form
    14,867.68/20,518.32 = 8,243.68/x
  3. Step 3: Cross multiply
    14,867.68x = 20,518.32 × 8,243.68
  4. Step 4: Simplify right side
    14,867.68x = 169,146,464.22
  5. Step 5: Solve for x
    x = 169,146,464.22/14,867.68
  6. Step 6: Final answer
    x = 11,376.79

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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.