Home / 27,979.56-38,614.14-15,406.68

Finding the Fourth Proportional to 27,979.56, 38,614.14 and 15,406.68

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Solution

The fourth proportional to 27,979.56, 38,614.14 and 15,406.68 is: 21,262.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.56 : 38,614.14 = 15,406.68 : x
  2. Step 2: Convert to fraction form
    27,979.56/38,614.14 = 15,406.68/x
  3. Step 3: Cross multiply
    27,979.56x = 38,614.14 × 15,406.68
  4. Step 4: Simplify right side
    27,979.56x = 594,915,698.46
  5. Step 5: Solve for x
    x = 594,915,698.46/27,979.56
  6. Step 6: Final answer
    x = 21,262.51

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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.