Home / 27,785.85-38,344.22-15,038.78

Finding the Fourth Proportional to 27,785.85, 38,344.22 and 15,038.78

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Solution

The fourth proportional to 27,785.85, 38,344.22 and 15,038.78 is: 20,753.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.85 : 38,344.22 = 15,038.78 : x
  2. Step 2: Convert to fraction form
    27,785.85/38,344.22 = 15,038.78/x
  3. Step 3: Cross multiply
    27,785.85x = 38,344.22 × 15,038.78
  4. Step 4: Simplify right side
    27,785.85x = 576,650,078.33
  5. Step 5: Solve for x
    x = 576,650,078.33/27,785.85
  6. Step 6: Final answer
    x = 20,753.37

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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.