Home / 19,979.87-27,576.25-11,487.93

Finding the Fourth Proportional to 19,979.87, 27,576.25 and 11,487.93

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Solution

The fourth proportional to 19,979.87, 27,576.25 and 11,487.93 is: 15,855.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,979.87 : 27,576.25 = 11,487.93 : x
  2. Step 2: Convert to fraction form
    19,979.87/27,576.25 = 11,487.93/x
  3. Step 3: Cross multiply
    19,979.87x = 27,576.25 × 11,487.93
  4. Step 4: Simplify right side
    19,979.87x = 316,793,897.53
  5. Step 5: Solve for x
    x = 316,793,897.53/19,979.87
  6. Step 6: Final answer
    x = 15,855.66

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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.