Home / 27,786.98-38,345.76-15,039.90

Finding the Fourth Proportional to 27,786.98, 38,345.76 and 15,039.90

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Solution

The fourth proportional to 27,786.98, 38,345.76 and 15,039.90 is: 20,754.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,786.98 : 38,345.76 = 15,039.90 : x
  2. Step 2: Convert to fraction form
    27,786.98/38,345.76 = 15,039.90/x
  3. Step 3: Cross multiply
    27,786.98x = 38,345.76 × 15,039.90
  4. Step 4: Simplify right side
    27,786.98x = 576,716,395.82
  5. Step 5: Solve for x
    x = 576,716,395.82/27,786.98
  6. Step 6: Final answer
    x = 20,754.91

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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.