Home / 11,390.73-15,719.24-6,355.28

Finding the Fourth Proportional to 11,390.73, 15,719.24 and 6,355.28

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Solution

The fourth proportional to 11,390.73, 15,719.24 and 6,355.28 is: 8,770.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.73 : 15,719.24 = 6,355.28 : x
  2. Step 2: Convert to fraction form
    11,390.73/15,719.24 = 6,355.28/x
  3. Step 3: Cross multiply
    11,390.73x = 15,719.24 × 6,355.28
  4. Step 4: Simplify right side
    11,390.73x = 99,900,171.59
  5. Step 5: Solve for x
    x = 99,900,171.59/11,390.73
  6. Step 6: Final answer
    x = 8,770.30

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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.