Home / 27,803.05-38,371.83-15,868.71

Finding the Fourth Proportional to 27,803.05, 38,371.83 and 15,868.71

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Solution

The fourth proportional to 27,803.05, 38,371.83 and 15,868.71 is: 21,900.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,803.05 : 38,371.83 = 15,868.71 : x
  2. Step 2: Convert to fraction form
    27,803.05/38,371.83 = 15,868.71/x
  3. Step 3: Cross multiply
    27,803.05x = 38,371.83 × 15,868.71
  4. Step 4: Simplify right side
    27,803.05x = 608,911,382.93
  5. Step 5: Solve for x
    x = 608,911,382.93/27,803.05
  6. Step 6: Final answer
    x = 21,900.89

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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.