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Finding the Fourth Proportional to 19,102.56, 26,388.12 and 18,168.39

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Solution

The fourth proportional to 19,102.56, 26,388.12 and 18,168.39 is: 25,097.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,102.56 : 26,388.12 = 18,168.39 : x
  2. Step 2: Convert to fraction form
    19,102.56/26,388.12 = 18,168.39/x
  3. Step 3: Cross multiply
    19,102.56x = 26,388.12 × 18,168.39
  4. Step 4: Simplify right side
    19,102.56x = 479,429,655.53
  5. Step 5: Solve for x
    x = 479,429,655.53/19,102.56
  6. Step 6: Final answer
    x = 25,097.67

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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.