Home / 27,778.83-38,329.41-15,841.86

Finding the Fourth Proportional to 27,778.83, 38,329.41 and 15,841.86

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Solution

The fourth proportional to 27,778.83, 38,329.41 and 15,841.86 is: 21,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.83 : 38,329.41 = 15,841.86 : x
  2. Step 2: Convert to fraction form
    27,778.83/38,329.41 = 15,841.86/x
  3. Step 3: Cross multiply
    27,778.83x = 38,329.41 × 15,841.86
  4. Step 4: Simplify right side
    27,778.83x = 607,209,147.10
  5. Step 5: Solve for x
    x = 607,209,147.10/27,778.83
  6. Step 6: Final answer
    x = 21,858.70

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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.