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Finding the Fourth Proportional to 14,865.08, 20,515.92 and 9,201.64

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Solution

The fourth proportional to 14,865.08, 20,515.92 and 9,201.64 is: 12,699.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,865.08 : 20,515.92 = 9,201.64 : x
  2. Step 2: Convert to fraction form
    14,865.08/20,515.92 = 9,201.64/x
  3. Step 3: Cross multiply
    14,865.08x = 20,515.92 × 9,201.64
  4. Step 4: Simplify right side
    14,865.08x = 188,780,110.11
  5. Step 5: Solve for x
    x = 188,780,110.11/14,865.08
  6. Step 6: Final answer
    x = 12,699.57

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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.