Home / 21,208.44-29,240.10-13,641.24

Finding the Fourth Proportional to 21,208.44, 29,240.10 and 13,641.24

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Solution

The fourth proportional to 21,208.44, 29,240.10 and 13,641.24 is: 18,807.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.44 : 29,240.10 = 13,641.24 : x
  2. Step 2: Convert to fraction form
    21,208.44/29,240.10 = 13,641.24/x
  3. Step 3: Cross multiply
    21,208.44x = 29,240.10 × 13,641.24
  4. Step 4: Simplify right side
    21,208.44x = 398,871,221.72
  5. Step 5: Solve for x
    x = 398,871,221.72/21,208.44
  6. Step 6: Final answer
    x = 18,807.19

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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.