Home / 21,249.15-29,323.15-11,688.97

Finding the Fourth Proportional to 21,249.15, 29,323.15 and 11,688.97

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Solution

The fourth proportional to 21,249.15, 29,323.15 and 11,688.97 is: 16,130.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249.15 : 29,323.15 = 11,688.97 : x
  2. Step 2: Convert to fraction form
    21,249.15/29,323.15 = 11,688.97/x
  3. Step 3: Cross multiply
    21,249.15x = 29,323.15 × 11,688.97
  4. Step 4: Simplify right side
    21,249.15x = 342,757,420.66
  5. Step 5: Solve for x
    x = 342,757,420.66/21,249.15
  6. Step 6: Final answer
    x = 16,130.41

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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.