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Finding the Fourth Proportional to 18,600.75, 25,670.76 and 10,218.87

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Solution

The fourth proportional to 18,600.75, 25,670.76 and 10,218.87 is: 14,102.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,600.75 : 25,670.76 = 10,218.87 : x
  2. Step 2: Convert to fraction form
    18,600.75/25,670.76 = 10,218.87/x
  3. Step 3: Cross multiply
    18,600.75x = 25,670.76 × 10,218.87
  4. Step 4: Simplify right side
    18,600.75x = 262,326,120.92
  5. Step 5: Solve for x
    x = 262,326,120.92/18,600.75
  6. Step 6: Final answer
    x = 14,102.99

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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.