Home / 19,921.89-27,491.49-11,959.41

Finding the Fourth Proportional to 19,921.89, 27,491.49 and 11,959.41

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Solution

The fourth proportional to 19,921.89, 27,491.49 and 11,959.41 is: 16,503.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.89 : 27,491.49 = 11,959.41 : x
  2. Step 2: Convert to fraction form
    19,921.89/27,491.49 = 11,959.41/x
  3. Step 3: Cross multiply
    19,921.89x = 27,491.49 × 11,959.41
  4. Step 4: Simplify right side
    19,921.89x = 328,782,000.42
  5. Step 5: Solve for x
    x = 328,782,000.42/19,921.89
  6. Step 6: Final answer
    x = 16,503.55

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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.