Home / 27,786.55-38,345.14-15,039.47

Finding the Fourth Proportional to 27,786.55, 38,345.14 and 15,039.47

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Solution

The fourth proportional to 27,786.55, 38,345.14 and 15,039.47 is: 20,754.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,786.55 : 38,345.14 = 15,039.47 : x
  2. Step 2: Convert to fraction form
    27,786.55/38,345.14 = 15,039.47/x
  3. Step 3: Cross multiply
    27,786.55x = 38,345.14 × 15,039.47
  4. Step 4: Simplify right side
    27,786.55x = 576,690,582.68
  5. Step 5: Solve for x
    x = 576,690,582.68/27,786.55
  6. Step 6: Final answer
    x = 20,754.31

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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.