Home / 20,343.39-30,515.09-9,811.46

Finding the Fourth Proportional to 20,343.39, 30,515.09 and 9,811.46

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Solution

The fourth proportional to 20,343.39, 30,515.09 and 9,811.46 is: 14,717.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.39 : 30,515.09 = 9,811.46 : x
  2. Step 2: Convert to fraction form
    20,343.39/30,515.09 = 9,811.46/x
  3. Step 3: Cross multiply
    20,343.39x = 30,515.09 × 9,811.46
  4. Step 4: Simplify right side
    20,343.39x = 299,397,383.30
  5. Step 5: Solve for x
    x = 299,397,383.30/20,343.39
  6. Step 6: Final answer
    x = 14,717.18

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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.