Home / 21,542.81-29,723.90-14,358.51

Finding the Fourth Proportional to 21,542.81, 29,723.90 and 14,358.51

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Solution

The fourth proportional to 21,542.81, 29,723.90 and 14,358.51 is: 19,811.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,542.81 : 29,723.90 = 14,358.51 : x
  2. Step 2: Convert to fraction form
    21,542.81/29,723.90 = 14,358.51/x
  3. Step 3: Cross multiply
    21,542.81x = 29,723.90 × 14,358.51
  4. Step 4: Simplify right side
    21,542.81x = 426,790,843.60
  5. Step 5: Solve for x
    x = 426,790,843.60/21,542.81
  6. Step 6: Final answer
    x = 19,811.29

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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.