Home / 19,742.72-27,227.32-16,380.21

Finding the Fourth Proportional to 19,742.72, 27,227.32 and 16,380.21

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Solution

The fourth proportional to 19,742.72, 27,227.32 and 16,380.21 is: 22,590.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,742.72 : 27,227.32 = 16,380.21 : x
  2. Step 2: Convert to fraction form
    19,742.72/27,227.32 = 16,380.21/x
  3. Step 3: Cross multiply
    19,742.72x = 27,227.32 × 16,380.21
  4. Step 4: Simplify right side
    19,742.72x = 445,989,110.32
  5. Step 5: Solve for x
    x = 445,989,110.32/19,742.72
  6. Step 6: Final answer
    x = 22,590.05

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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.