Home / 21,617.16-29,831.54-12,662.75

Finding the Fourth Proportional to 21,617.16, 29,831.54 and 12,662.75

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Solution

The fourth proportional to 21,617.16, 29,831.54 and 12,662.75 is: 17,474.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,617.16 : 29,831.54 = 12,662.75 : x
  2. Step 2: Convert to fraction form
    21,617.16/29,831.54 = 12,662.75/x
  3. Step 3: Cross multiply
    21,617.16x = 29,831.54 × 12,662.75
  4. Step 4: Simplify right side
    21,617.16x = 377,749,120.66
  5. Step 5: Solve for x
    x = 377,749,120.66/21,617.16
  6. Step 6: Final answer
    x = 17,474.50

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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.