Home / 21,218.58-29,261.52-16,173.90

Finding the Fourth Proportional to 21,218.58, 29,261.52 and 16,173.90

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Solution

The fourth proportional to 21,218.58, 29,261.52 and 16,173.90 is: 22,304.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.58 : 29,261.52 = 16,173.90 : x
  2. Step 2: Convert to fraction form
    21,218.58/29,261.52 = 16,173.90/x
  3. Step 3: Cross multiply
    21,218.58x = 29,261.52 × 16,173.90
  4. Step 4: Simplify right side
    21,218.58x = 473,272,898.33
  5. Step 5: Solve for x
    x = 473,272,898.33/21,218.58
  6. Step 6: Final answer
    x = 22,304.65

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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.