Home / 13,821.90-20,732.85-13,706.70

Finding the Fourth Proportional to 13,821.90, 20,732.85 and 13,706.70

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Solution

The fourth proportional to 13,821.90, 20,732.85 and 13,706.70 is: 20,560.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.90 : 20,732.85 = 13,706.70 : x
  2. Step 2: Convert to fraction form
    13,821.90/20,732.85 = 13,706.70/x
  3. Step 3: Cross multiply
    13,821.90x = 20,732.85 × 13,706.70
  4. Step 4: Simplify right side
    13,821.90x = 284,178,955.10
  5. Step 5: Solve for x
    x = 284,178,955.10/13,821.90
  6. Step 6: Final answer
    x = 20,560.05

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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.