Home / 12,964.05-17,889.66-7,659.36

Finding the Fourth Proportional to 12,964.05, 17,889.66 and 7,659.36

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Solution

The fourth proportional to 12,964.05, 17,889.66 and 7,659.36 is: 10,569.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,964.05 : 17,889.66 = 7,659.36 : x
  2. Step 2: Convert to fraction form
    12,964.05/17,889.66 = 7,659.36/x
  3. Step 3: Cross multiply
    12,964.05x = 17,889.66 × 7,659.36
  4. Step 4: Simplify right side
    12,964.05x = 137,023,346.22
  5. Step 5: Solve for x
    x = 137,023,346.22/12,964.05
  6. Step 6: Final answer
    x = 10,569.49

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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.