Home / 11,105.60-15,328.32-7,329.44

Finding the Fourth Proportional to 11,105.60, 15,328.32 and 7,329.44

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Solution

The fourth proportional to 11,105.60, 15,328.32 and 7,329.44 is: 10,116.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.60 : 15,328.32 = 7,329.44 : x
  2. Step 2: Convert to fraction form
    11,105.60/15,328.32 = 7,329.44/x
  3. Step 3: Cross multiply
    11,105.60x = 15,328.32 × 7,329.44
  4. Step 4: Simplify right side
    11,105.60x = 112,348,001.74
  5. Step 5: Solve for x
    x = 112,348,001.74/11,105.60
  6. Step 6: Final answer
    x = 10,116.34

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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.