Home / 20,111.39-27,753.54-11,615.30

Finding the Fourth Proportional to 20,111.39, 27,753.54 and 11,615.30

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Solution

The fourth proportional to 20,111.39, 27,753.54 and 11,615.30 is: 16,029.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.39 : 27,753.54 = 11,615.30 : x
  2. Step 2: Convert to fraction form
    20,111.39/27,753.54 = 11,615.30/x
  3. Step 3: Cross multiply
    20,111.39x = 27,753.54 × 11,615.30
  4. Step 4: Simplify right side
    20,111.39x = 322,365,693.16
  5. Step 5: Solve for x
    x = 322,365,693.16/20,111.39
  6. Step 6: Final answer
    x = 16,029.01

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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.