Home / 19,949.51-27,500.90-12,778.58

Finding the Fourth Proportional to 19,949.51, 27,500.90 and 12,778.58

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Solution

The fourth proportional to 19,949.51, 27,500.90 and 12,778.58 is: 17,615.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,949.51 : 27,500.90 = 12,778.58 : x
  2. Step 2: Convert to fraction form
    19,949.51/27,500.90 = 12,778.58/x
  3. Step 3: Cross multiply
    19,949.51x = 27,500.90 × 12,778.58
  4. Step 4: Simplify right side
    19,949.51x = 351,422,249.32
  5. Step 5: Solve for x
    x = 351,422,249.32/19,949.51
  6. Step 6: Final answer
    x = 17,615.59

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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.