Home / 12,939.62-17,856.45-7,634.93

Finding the Fourth Proportional to 12,939.62, 17,856.45 and 7,634.93

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Solution

The fourth proportional to 12,939.62, 17,856.45 and 7,634.93 is: 10,536.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.62 : 17,856.45 = 7,634.93 : x
  2. Step 2: Convert to fraction form
    12,939.62/17,856.45 = 7,634.93/x
  3. Step 3: Cross multiply
    12,939.62x = 17,856.45 × 7,634.93
  4. Step 4: Simplify right side
    12,939.62x = 136,332,656.52
  5. Step 5: Solve for x
    x = 136,332,656.52/12,939.62
  6. Step 6: Final answer
    x = 10,536.07

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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.