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Finding the Fourth Proportional to 13,079.66, 18,036.66 and 11,197.47

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Solution

The fourth proportional to 13,079.66, 18,036.66 and 11,197.47 is: 15,441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.66 : 18,036.66 = 11,197.47 : x
  2. Step 2: Convert to fraction form
    13,079.66/18,036.66 = 11,197.47/x
  3. Step 3: Cross multiply
    13,079.66x = 18,036.66 × 11,197.47
  4. Step 4: Simplify right side
    13,079.66x = 201,964,959.25
  5. Step 5: Solve for x
    x = 201,964,959.25/13,079.66
  6. Step 6: Final answer
    x = 15,441.15

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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.