Home / 15,917.67-21,943.57-11,187.27

Finding the Fourth Proportional to 15,917.67, 21,943.57 and 11,187.27

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Solution

The fourth proportional to 15,917.67, 21,943.57 and 11,187.27 is: 15,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,917.67 : 21,943.57 = 11,187.27 : x
  2. Step 2: Convert to fraction form
    15,917.67/21,943.57 = 11,187.27/x
  3. Step 3: Cross multiply
    15,917.67x = 21,943.57 × 11,187.27
  4. Step 4: Simplify right side
    15,917.67x = 245,488,642.35
  5. Step 5: Solve for x
    x = 245,488,642.35/15,917.67
  6. Step 6: Final answer
    x = 15,422.40

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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.