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Finding the Fourth Proportional to 18,697.63, 25,750.24 and 18,289.39

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Solution

The fourth proportional to 18,697.63, 25,750.24 and 18,289.39 is: 25,188.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.63 : 25,750.24 = 18,289.39 : x
  2. Step 2: Convert to fraction form
    18,697.63/25,750.24 = 18,289.39/x
  3. Step 3: Cross multiply
    18,697.63x = 25,750.24 × 18,289.39
  4. Step 4: Simplify right side
    18,697.63x = 470,956,181.95
  5. Step 5: Solve for x
    x = 470,956,181.95/18,697.63
  6. Step 6: Final answer
    x = 25,188.01

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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.