Home / 20,831.64-31,269.06-13,954.20

Finding the Fourth Proportional to 20,831.64, 31,269.06 and 13,954.20

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Solution

The fourth proportional to 20,831.64, 31,269.06 and 13,954.20 is: 20,945.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.64 : 31,269.06 = 13,954.20 : x
  2. Step 2: Convert to fraction form
    20,831.64/31,269.06 = 13,954.20/x
  3. Step 3: Cross multiply
    20,831.64x = 31,269.06 × 13,954.20
  4. Step 4: Simplify right side
    20,831.64x = 436,334,717.05
  5. Step 5: Solve for x
    x = 436,334,717.05/20,831.64
  6. Step 6: Final answer
    x = 20,945.77

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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.