Home / 21,187.69-29,238.93-11,627.74

Finding the Fourth Proportional to 21,187.69, 29,238.93 and 11,627.74

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Solution

The fourth proportional to 21,187.69, 29,238.93 and 11,627.74 is: 16,046.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.69 : 29,238.93 = 11,627.74 : x
  2. Step 2: Convert to fraction form
    21,187.69/29,238.93 = 11,627.74/x
  3. Step 3: Cross multiply
    21,187.69x = 29,238.93 × 11,627.74
  4. Step 4: Simplify right side
    21,187.69x = 339,982,602.82
  5. Step 5: Solve for x
    x = 339,982,602.82/21,187.69
  6. Step 6: Final answer
    x = 16,046.23

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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.