Home / 11,009.12-15,177.60-7,859.84

Finding the Fourth Proportional to 11,009.12, 15,177.60 and 7,859.84

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Solution

The fourth proportional to 11,009.12, 15,177.60 and 7,859.84 is: 10,835.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,009.12 : 15,177.60 = 7,859.84 : x
  2. Step 2: Convert to fraction form
    11,009.12/15,177.60 = 7,859.84/x
  3. Step 3: Cross multiply
    11,009.12x = 15,177.60 × 7,859.84
  4. Step 4: Simplify right side
    11,009.12x = 119,293,507.58
  5. Step 5: Solve for x
    x = 119,293,507.58/11,009.12
  6. Step 6: Final answer
    x = 10,835.88

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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.