Home / 11,169.96-15,414.81-6,390.36

Finding the Fourth Proportional to 11,169.96, 15,414.81 and 6,390.36

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Solution

The fourth proportional to 11,169.96, 15,414.81 and 6,390.36 is: 8,818.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,169.96 : 15,414.81 = 6,390.36 : x
  2. Step 2: Convert to fraction form
    11,169.96/15,414.81 = 6,390.36/x
  3. Step 3: Cross multiply
    11,169.96x = 15,414.81 × 6,390.36
  4. Step 4: Simplify right side
    11,169.96x = 98,506,076.21
  5. Step 5: Solve for x
    x = 98,506,076.21/11,169.96
  6. Step 6: Final answer
    x = 8,818.84

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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.