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Finding the Fourth Proportional to 18,912.01, 26,079.22 and 12,536.38

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Solution

The fourth proportional to 18,912.01, 26,079.22 and 12,536.38 is: 17,287.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.01 : 26,079.22 = 12,536.38 : x
  2. Step 2: Convert to fraction form
    18,912.01/26,079.22 = 12,536.38/x
  3. Step 3: Cross multiply
    18,912.01x = 26,079.22 × 12,536.38
  4. Step 4: Simplify right side
    18,912.01x = 326,939,012.02
  5. Step 5: Solve for x
    x = 326,939,012.02/18,912.01
  6. Step 6: Final answer
    x = 17,287.38

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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.