Home / 11,406.31-17,109.34-7,509.79

Finding the Fourth Proportional to 11,406.31, 17,109.34 and 7,509.79

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Solution

The fourth proportional to 11,406.31, 17,109.34 and 7,509.79 is: 11,264.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,406.31 : 17,109.34 = 7,509.79 : x
  2. Step 2: Convert to fraction form
    11,406.31/17,109.34 = 7,509.79/x
  3. Step 3: Cross multiply
    11,406.31x = 17,109.34 × 7,509.79
  4. Step 4: Simplify right side
    11,406.31x = 128,487,550.44
  5. Step 5: Solve for x
    x = 128,487,550.44/11,406.31
  6. Step 6: Final answer
    x = 11,264.60

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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.