Home / 11,109.30-15,331.20-6,393.58

Finding the Fourth Proportional to 11,109.30, 15,331.20 and 6,393.58

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Solution

The fourth proportional to 11,109.30, 15,331.20 and 6,393.58 is: 8,823.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,109.30 : 15,331.20 = 6,393.58 : x
  2. Step 2: Convert to fraction form
    11,109.30/15,331.20 = 6,393.58/x
  3. Step 3: Cross multiply
    11,109.30x = 15,331.20 × 6,393.58
  4. Step 4: Simplify right side
    11,109.30x = 98,021,253.70
  5. Step 5: Solve for x
    x = 98,021,253.70/11,109.30
  6. Step 6: Final answer
    x = 8,823.35

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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.