Home / 11,507.36-15,876.64-6,789.92

Finding the Fourth Proportional to 11,507.36, 15,876.64 and 6,789.92

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Solution

The fourth proportional to 11,507.36, 15,876.64 and 6,789.92 is: 9,368.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,507.36 : 15,876.64 = 6,789.92 : x
  2. Step 2: Convert to fraction form
    11,507.36/15,876.64 = 6,789.92/x
  3. Step 3: Cross multiply
    11,507.36x = 15,876.64 × 6,789.92
  4. Step 4: Simplify right side
    11,507.36x = 107,801,115.47
  5. Step 5: Solve for x
    x = 107,801,115.47/11,507.36
  6. Step 6: Final answer
    x = 9,368.01

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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.