Home / 12,379.03-17,086.95-7,914.81

Finding the Fourth Proportional to 12,379.03, 17,086.95 and 7,914.81

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Solution

The fourth proportional to 12,379.03, 17,086.95 and 7,914.81 is: 10,924.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379.03 : 17,086.95 = 7,914.81 : x
  2. Step 2: Convert to fraction form
    12,379.03/17,086.95 = 7,914.81/x
  3. Step 3: Cross multiply
    12,379.03x = 17,086.95 × 7,914.81
  4. Step 4: Simplify right side
    12,379.03x = 135,240,026.81
  5. Step 5: Solve for x
    x = 135,240,026.81/12,379.03
  6. Step 6: Final answer
    x = 10,924.93

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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.