Home / 11,917.09-17,875.70-3,151.94

Finding the Fourth Proportional to 11,917.09, 17,875.70 and 3,151.94

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Solution

The fourth proportional to 11,917.09, 17,875.70 and 3,151.94 is: 4,727.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,917.09 : 17,875.70 = 3,151.94 : x
  2. Step 2: Convert to fraction form
    11,917.09/17,875.70 = 3,151.94/x
  3. Step 3: Cross multiply
    11,917.09x = 17,875.70 × 3,151.94
  4. Step 4: Simplify right side
    11,917.09x = 56,343,118.10
  5. Step 5: Solve for x
    x = 56,343,118.10/11,917.09
  6. Step 6: Final answer
    x = 4,727.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.