Home / 21,142.44-29,173.06-13,590.44

Finding the Fourth Proportional to 21,142.44, 29,173.06 and 13,590.44

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Solution

The fourth proportional to 21,142.44, 29,173.06 and 13,590.44 is: 18,752.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.44 : 29,173.06 = 13,590.44 : x
  2. Step 2: Convert to fraction form
    21,142.44/29,173.06 = 13,590.44/x
  3. Step 3: Cross multiply
    21,142.44x = 29,173.06 × 13,590.44
  4. Step 4: Simplify right side
    21,142.44x = 396,474,721.55
  5. Step 5: Solve for x
    x = 396,474,721.55/21,142.44
  6. Step 6: Final answer
    x = 18,752.55

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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.