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Finding the Fourth Proportional to 14,865.08, 20,515.91 and 9,201.65

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Solution

The fourth proportional to 14,865.08, 20,515.91 and 9,201.65 is: 12,699.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,865.08 : 20,515.91 = 9,201.65 : x
  2. Step 2: Convert to fraction form
    14,865.08/20,515.91 = 9,201.65/x
  3. Step 3: Cross multiply
    14,865.08x = 20,515.91 × 9,201.65
  4. Step 4: Simplify right side
    14,865.08x = 188,780,223.25
  5. Step 5: Solve for x
    x = 188,780,223.25/14,865.08
  6. Step 6: Final answer
    x = 12,699.58

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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.