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Finding the Fourth Proportional to 13,079.16, 18,041.94 and 8,039.88

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Solution

The fourth proportional to 13,079.16, 18,041.94 and 8,039.88 is: 11,090.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.16 : 18,041.94 = 8,039.88 : x
  2. Step 2: Convert to fraction form
    13,079.16/18,041.94 = 8,039.88/x
  3. Step 3: Cross multiply
    13,079.16x = 18,041.94 × 8,039.88
  4. Step 4: Simplify right side
    13,079.16x = 145,055,032.57
  5. Step 5: Solve for x
    x = 145,055,032.57/13,079.16
  6. Step 6: Final answer
    x = 11,090.55

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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.