Home / 13,979.61-19,291.19-7,691.85

Finding the Fourth Proportional to 13,979.61, 19,291.19 and 7,691.85

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Solution

The fourth proportional to 13,979.61, 19,291.19 and 7,691.85 is: 10,614.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.61 : 19,291.19 = 7,691.85 : x
  2. Step 2: Convert to fraction form
    13,979.61/19,291.19 = 7,691.85/x
  3. Step 3: Cross multiply
    13,979.61x = 19,291.19 × 7,691.85
  4. Step 4: Simplify right side
    13,979.61x = 148,384,901.34
  5. Step 5: Solve for x
    x = 148,384,901.34/13,979.61
  6. Step 6: Final answer
    x = 10,614.38

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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.