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Finding the Fourth Proportional to 19,447.88, 26,842.02 and 11,489.72

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Solution

The fourth proportional to 19,447.88, 26,842.02 and 11,489.72 is: 15,858.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,447.88 : 26,842.02 = 11,489.72 : x
  2. Step 2: Convert to fraction form
    19,447.88/26,842.02 = 11,489.72/x
  3. Step 3: Cross multiply
    19,447.88x = 26,842.02 × 11,489.72
  4. Step 4: Simplify right side
    19,447.88x = 308,407,294.03
  5. Step 5: Solve for x
    x = 308,407,294.03/19,447.88
  6. Step 6: Final answer
    x = 15,858.14

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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.