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Finding the Fourth Proportional to 12,598.74, 18,892.65 and 3,831.63

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Solution

The fourth proportional to 12,598.74, 18,892.65 and 3,831.63 is: 5,745.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,598.74 : 18,892.65 = 3,831.63 : x
  2. Step 2: Convert to fraction form
    12,598.74/18,892.65 = 3,831.63/x
  3. Step 3: Cross multiply
    12,598.74x = 18,892.65 × 3,831.63
  4. Step 4: Simplify right side
    12,598.74x = 72,389,644.52
  5. Step 5: Solve for x
    x = 72,389,644.52/12,598.74
  6. Step 6: Final answer
    x = 5,745.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.