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Finding the Fourth Proportional to 22,340.93, 30,831.03 and 12,132.40

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Solution

The fourth proportional to 22,340.93, 30,831.03 and 12,132.40 is: 16,743.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,340.93 : 30,831.03 = 12,132.40 : x
  2. Step 2: Convert to fraction form
    22,340.93/30,831.03 = 12,132.40/x
  3. Step 3: Cross multiply
    22,340.93x = 30,831.03 × 12,132.40
  4. Step 4: Simplify right side
    22,340.93x = 374,054,388.37
  5. Step 5: Solve for x
    x = 374,054,388.37/22,340.93
  6. Step 6: Final answer
    x = 16,743.01

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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.