Home / 21,124.62-29,165.73-13,573.86

Finding the Fourth Proportional to 21,124.62, 29,165.73 and 13,573.86

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Solution

The fourth proportional to 21,124.62, 29,165.73 and 13,573.86 is: 18,740.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.62 : 29,165.73 = 13,573.86 : x
  2. Step 2: Convert to fraction form
    21,124.62/29,165.73 = 13,573.86/x
  3. Step 3: Cross multiply
    21,124.62x = 29,165.73 × 13,573.86
  4. Step 4: Simplify right side
    21,124.62x = 395,891,535.82
  5. Step 5: Solve for x
    x = 395,891,535.82/21,124.62
  6. Step 6: Final answer
    x = 18,740.76

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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.