Home / 19,718.14-27,211.10-12,644.59

Finding the Fourth Proportional to 19,718.14, 27,211.10 and 12,644.59

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Solution

The fourth proportional to 19,718.14, 27,211.10 and 12,644.59 is: 17,449.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,718.14 : 27,211.10 = 12,644.59 : x
  2. Step 2: Convert to fraction form
    19,718.14/27,211.10 = 12,644.59/x
  3. Step 3: Cross multiply
    19,718.14x = 27,211.10 × 12,644.59
  4. Step 4: Simplify right side
    19,718.14x = 344,073,139.73
  5. Step 5: Solve for x
    x = 344,073,139.73/19,718.14
  6. Step 6: Final answer
    x = 17,449.57

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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.