Home / 11,170.51-15,414.40-6,455.09

Finding the Fourth Proportional to 11,170.51, 15,414.40 and 6,455.09

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Solution

The fourth proportional to 11,170.51, 15,414.40 and 6,455.09 is: 8,907.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,170.51 : 15,414.40 = 6,455.09 : x
  2. Step 2: Convert to fraction form
    11,170.51/15,414.40 = 6,455.09/x
  3. Step 3: Cross multiply
    11,170.51x = 15,414.40 × 6,455.09
  4. Step 4: Simplify right side
    11,170.51x = 99,501,385.90
  5. Step 5: Solve for x
    x = 99,501,385.90/11,170.51
  6. Step 6: Final answer
    x = 8,907.51

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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.