Home / 21,486.88-32,229.02-12,777.22

Finding the Fourth Proportional to 21,486.88, 32,229.02 and 12,777.22

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Solution

The fourth proportional to 21,486.88, 32,229.02 and 12,777.22 is: 19,165.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.88 : 32,229.02 = 12,777.22 : x
  2. Step 2: Convert to fraction form
    21,486.88/32,229.02 = 12,777.22/x
  3. Step 3: Cross multiply
    21,486.88x = 32,229.02 × 12,777.22
  4. Step 4: Simplify right side
    21,486.88x = 411,797,278.92
  5. Step 5: Solve for x
    x = 411,797,278.92/21,486.88
  6. Step 6: Final answer
    x = 19,165.06

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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.