Home / 27,785.91-38,344.25-15,038.81

Finding the Fourth Proportional to 27,785.91, 38,344.25 and 15,038.81

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Solution

The fourth proportional to 27,785.91, 38,344.25 and 15,038.81 is: 20,753.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.91 : 38,344.25 = 15,038.81 : x
  2. Step 2: Convert to fraction form
    27,785.91/38,344.25 = 15,038.81/x
  3. Step 3: Cross multiply
    27,785.91x = 38,344.25 × 15,038.81
  4. Step 4: Simplify right side
    27,785.91x = 576,651,623.43
  5. Step 5: Solve for x
    x = 576,651,623.43/27,785.91
  6. Step 6: Final answer
    x = 20,753.38

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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.