Home / 21,305.02-31,922.22-12,959.80

Finding the Fourth Proportional to 21,305.02, 31,922.22 and 12,959.80

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Solution

The fourth proportional to 21,305.02, 31,922.22 and 12,959.80 is: 19,418.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.02 : 31,922.22 = 12,959.80 : x
  2. Step 2: Convert to fraction form
    21,305.02/31,922.22 = 12,959.80/x
  3. Step 3: Cross multiply
    21,305.02x = 31,922.22 × 12,959.80
  4. Step 4: Simplify right side
    21,305.02x = 413,705,586.76
  5. Step 5: Solve for x
    x = 413,705,586.76/21,305.02
  6. Step 6: Final answer
    x = 19,418.22

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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.