Home / 20,343.72-30,515.58-5,553.03

Finding the Fourth Proportional to 20,343.72, 30,515.58 and 5,553.03

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Solution

The fourth proportional to 20,343.72, 30,515.58 and 5,553.03 is: 8,329.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.72 : 30,515.58 = 5,553.03 : x
  2. Step 2: Convert to fraction form
    20,343.72/30,515.58 = 5,553.03/x
  3. Step 3: Cross multiply
    20,343.72x = 30,515.58 × 5,553.03
  4. Step 4: Simplify right side
    20,343.72x = 169,454,066.46
  5. Step 5: Solve for x
    x = 169,454,066.46/20,343.72
  6. Step 6: Final answer
    x = 8,329.55

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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.