Home / 19,778.25-27,281.38-13,807.74

Finding the Fourth Proportional to 19,778.25, 27,281.38 and 13,807.74

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Solution

The fourth proportional to 19,778.25, 27,281.38 and 13,807.74 is: 19,045.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,778.25 : 27,281.38 = 13,807.74 : x
  2. Step 2: Convert to fraction form
    19,778.25/27,281.38 = 13,807.74/x
  3. Step 3: Cross multiply
    19,778.25x = 27,281.38 × 13,807.74
  4. Step 4: Simplify right side
    19,778.25x = 376,694,201.88
  5. Step 5: Solve for x
    x = 376,694,201.88/19,778.25
  6. Step 6: Final answer
    x = 19,045.88

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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.