Home / 11,428.19-15,772.20-6,393.68

Finding the Fourth Proportional to 11,428.19, 15,772.20 and 6,393.68

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Solution

The fourth proportional to 11,428.19, 15,772.20 and 6,393.68 is: 8,824.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,428.19 : 15,772.20 = 6,393.68 : x
  2. Step 2: Convert to fraction form
    11,428.19/15,772.20 = 6,393.68/x
  3. Step 3: Cross multiply
    11,428.19x = 15,772.20 × 6,393.68
  4. Step 4: Simplify right side
    11,428.19x = 100,842,399.70
  5. Step 5: Solve for x
    x = 100,842,399.70/11,428.19
  6. Step 6: Final answer
    x = 8,824.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.