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Finding the Fourth Proportional to 12,612.04, 18,922.02 and 5,219.98

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Solution

The fourth proportional to 12,612.04, 18,922.02 and 5,219.98 is: 7,831.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.04 : 18,922.02 = 5,219.98 : x
  2. Step 2: Convert to fraction form
    12,612.04/18,922.02 = 5,219.98/x
  3. Step 3: Cross multiply
    12,612.04x = 18,922.02 × 5,219.98
  4. Step 4: Simplify right side
    12,612.04x = 98,772,565.96
  5. Step 5: Solve for x
    x = 98,772,565.96/12,612.04
  6. Step 6: Final answer
    x = 7,831.61

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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.