Home / 21,987.91-32,963.37-7,188.76

Finding the Fourth Proportional to 21,987.91, 32,963.37 and 7,188.76

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Solution

The fourth proportional to 21,987.91, 32,963.37 and 7,188.76 is: 10,777.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987.91 : 32,963.37 = 7,188.76 : x
  2. Step 2: Convert to fraction form
    21,987.91/32,963.37 = 7,188.76/x
  3. Step 3: Cross multiply
    21,987.91x = 32,963.37 × 7,188.76
  4. Step 4: Simplify right side
    21,987.91x = 236,965,755.72
  5. Step 5: Solve for x
    x = 236,965,755.72/21,987.91
  6. Step 6: Final answer
    x = 10,777.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.