Home / 13,777.22-19,016.85-8,111.51

Finding the Fourth Proportional to 13,777.22, 19,016.85 and 8,111.51

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Solution

The fourth proportional to 13,777.22, 19,016.85 and 8,111.51 is: 11,196.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.22 : 19,016.85 = 8,111.51 : x
  2. Step 2: Convert to fraction form
    13,777.22/19,016.85 = 8,111.51/x
  3. Step 3: Cross multiply
    13,777.22x = 19,016.85 × 8,111.51
  4. Step 4: Simplify right side
    13,777.22x = 154,255,273.86
  5. Step 5: Solve for x
    x = 154,255,273.86/13,777.22
  6. Step 6: Final answer
    x = 11,196.40

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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.