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Finding the Fourth Proportional to 19,144.68, 26,420.68 and 11,191.56

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Solution

The fourth proportional to 19,144.68, 26,420.68 and 11,191.56 is: 15,444.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,144.68 : 26,420.68 = 11,191.56 : x
  2. Step 2: Convert to fraction form
    19,144.68/26,420.68 = 11,191.56/x
  3. Step 3: Cross multiply
    19,144.68x = 26,420.68 × 11,191.56
  4. Step 4: Simplify right side
    19,144.68x = 295,688,493.36
  5. Step 5: Solve for x
    x = 295,688,493.36/19,144.68
  6. Step 6: Final answer
    x = 15,444.95

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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.