Home / 12,889.14-17,789.94-10,387.86

Finding the Fourth Proportional to 12,889.14, 17,789.94 and 10,387.86

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Solution

The fourth proportional to 12,889.14, 17,789.94 and 10,387.86 is: 14,337.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.14 : 17,789.94 = 10,387.86 : x
  2. Step 2: Convert to fraction form
    12,889.14/17,789.94 = 10,387.86/x
  3. Step 3: Cross multiply
    12,889.14x = 17,789.94 × 10,387.86
  4. Step 4: Simplify right side
    12,889.14x = 184,799,406.13
  5. Step 5: Solve for x
    x = 184,799,406.13/12,889.14
  6. Step 6: Final answer
    x = 14,337.61

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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.