Home / 11,102.40-15,321.80-6,388.24

Finding the Fourth Proportional to 11,102.40, 15,321.80 and 6,388.24

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Solution

The fourth proportional to 11,102.40, 15,321.80 and 6,388.24 is: 8,816.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,102.40 : 15,321.80 = 6,388.24 : x
  2. Step 2: Convert to fraction form
    11,102.40/15,321.80 = 6,388.24/x
  3. Step 3: Cross multiply
    11,102.40x = 15,321.80 × 6,388.24
  4. Step 4: Simplify right side
    11,102.40x = 97,879,335.63
  5. Step 5: Solve for x
    x = 97,879,335.63/11,102.40
  6. Step 6: Final answer
    x = 8,816.05

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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.