Home / 11,405.31-17,107.85-7,508.79

Finding the Fourth Proportional to 11,405.31, 17,107.85 and 7,508.79

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Solution

The fourth proportional to 11,405.31, 17,107.85 and 7,508.79 is: 11,263.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.31 : 17,107.85 = 7,508.79 : x
  2. Step 2: Convert to fraction form
    11,405.31/17,107.85 = 7,508.79/x
  3. Step 3: Cross multiply
    11,405.31x = 17,107.85 × 7,508.79
  4. Step 4: Simplify right side
    11,405.31x = 128,459,215.46
  5. Step 5: Solve for x
    x = 128,459,215.46/11,405.31
  6. Step 6: Final answer
    x = 11,263.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.