Home / 27,730.78-38,269.91-15,155.58

Finding the Fourth Proportional to 27,730.78, 38,269.91 and 15,155.58

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Solution

The fourth proportional to 27,730.78, 38,269.91 and 15,155.58 is: 20,915.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,730.78 : 38,269.91 = 15,155.58 : x
  2. Step 2: Convert to fraction form
    27,730.78/38,269.91 = 15,155.58/x
  3. Step 3: Cross multiply
    27,730.78x = 38,269.91 × 15,155.58
  4. Step 4: Simplify right side
    27,730.78x = 580,002,682.60
  5. Step 5: Solve for x
    x = 580,002,682.60/27,730.78
  6. Step 6: Final answer
    x = 20,915.48

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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.