Home / 11,208.79-15,454.42-7,009.75

Finding the Fourth Proportional to 11,208.79, 15,454.42 and 7,009.75

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Solution

The fourth proportional to 11,208.79, 15,454.42 and 7,009.75 is: 9,664.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,208.79 : 15,454.42 = 7,009.75 : x
  2. Step 2: Convert to fraction form
    11,208.79/15,454.42 = 7,009.75/x
  3. Step 3: Cross multiply
    11,208.79x = 15,454.42 × 7,009.75
  4. Step 4: Simplify right side
    11,208.79x = 108,331,620.60
  5. Step 5: Solve for x
    x = 108,331,620.60/11,208.79
  6. Step 6: Final answer
    x = 9,664.88

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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.