Home / 11,105.08-15,328.40-6,857.44

Finding the Fourth Proportional to 11,105.08, 15,328.40 and 6,857.44

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Solution

The fourth proportional to 11,105.08, 15,328.40 and 6,857.44 is: 9,465.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.08 : 15,328.40 = 6,857.44 : x
  2. Step 2: Convert to fraction form
    11,105.08/15,328.40 = 6,857.44/x
  3. Step 3: Cross multiply
    11,105.08x = 15,328.40 × 6,857.44
  4. Step 4: Simplify right side
    11,105.08x = 105,113,583.30
  5. Step 5: Solve for x
    x = 105,113,583.30/11,105.08
  6. Step 6: Final answer
    x = 9,465.36

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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.