Home / 20,165.22-27,827.75-11,212.49

Finding the Fourth Proportional to 20,165.22, 27,827.75 and 11,212.49

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Solution

The fourth proportional to 20,165.22, 27,827.75 and 11,212.49 is: 15,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.22 : 27,827.75 = 11,212.49 : x
  2. Step 2: Convert to fraction form
    20,165.22/27,827.75 = 11,212.49/x
  3. Step 3: Cross multiply
    20,165.22x = 27,827.75 × 11,212.49
  4. Step 4: Simplify right side
    20,165.22x = 312,018,466.20
  5. Step 5: Solve for x
    x = 312,018,466.20/20,165.22
  6. Step 6: Final answer
    x = 15,473.10

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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.