Home / 17,831.64-26,729.46-12,889.20

Finding the Fourth Proportional to 17,831.64, 26,729.46 and 12,889.20

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Solution

The fourth proportional to 17,831.64, 26,729.46 and 12,889.20 is: 19,320.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,831.64 : 26,729.46 = 12,889.20 : x
  2. Step 2: Convert to fraction form
    17,831.64/26,729.46 = 12,889.20/x
  3. Step 3: Cross multiply
    17,831.64x = 26,729.46 × 12,889.20
  4. Step 4: Simplify right side
    17,831.64x = 344,521,355.83
  5. Step 5: Solve for x
    x = 344,521,355.83/17,831.64
  6. Step 6: Final answer
    x = 19,320.79

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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.