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Finding the Fourth Proportional to 13,698.52, 20,547.78 and 3,310.27

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Solution

The fourth proportional to 13,698.52, 20,547.78 and 3,310.27 is: 4,965.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.52 : 20,547.78 = 3,310.27 : x
  2. Step 2: Convert to fraction form
    13,698.52/20,547.78 = 3,310.27/x
  3. Step 3: Cross multiply
    13,698.52x = 20,547.78 × 3,310.27
  4. Step 4: Simplify right side
    13,698.52x = 68,018,699.70
  5. Step 5: Solve for x
    x = 68,018,699.70/13,698.52
  6. Step 6: Final answer
    x = 4,965.41

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Similar ratio
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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.