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Finding the Fourth Proportional to 13,698.59, 20,547.89 and 3,310.34

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Solution

The fourth proportional to 13,698.59, 20,547.89 and 3,310.34 is: 4,965.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.59 : 20,547.89 = 3,310.34 : x
  2. Step 2: Convert to fraction form
    13,698.59/20,547.89 = 3,310.34/x
  3. Step 3: Cross multiply
    13,698.59x = 20,547.89 × 3,310.34
  4. Step 4: Simplify right side
    13,698.59x = 68,020,502.18
  5. Step 5: Solve for x
    x = 68,020,502.18/13,698.59
  6. Step 6: Final answer
    x = 4,965.51

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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.