Home / 13,079.22-18,044.37-8,039.40

Finding the Fourth Proportional to 13,079.22, 18,044.37 and 8,039.40

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Solution

The fourth proportional to 13,079.22, 18,044.37 and 8,039.40 is: 11,091.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.22 : 18,044.37 = 8,039.40 : x
  2. Step 2: Convert to fraction form
    13,079.22/18,044.37 = 8,039.40/x
  3. Step 3: Cross multiply
    13,079.22x = 18,044.37 × 8,039.40
  4. Step 4: Simplify right side
    13,079.22x = 145,065,908.18
  5. Step 5: Solve for x
    x = 145,065,908.18/13,079.22
  6. Step 6: Final answer
    x = 11,091.33

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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.