Home / 13,801.30-19,044.21-7,831.78

Finding the Fourth Proportional to 13,801.30, 19,044.21 and 7,831.78

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Solution

The fourth proportional to 13,801.30, 19,044.21 and 7,831.78 is: 10,806.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801.30 : 19,044.21 = 7,831.78 : x
  2. Step 2: Convert to fraction form
    13,801.30/19,044.21 = 7,831.78/x
  3. Step 3: Cross multiply
    13,801.30x = 19,044.21 × 7,831.78
  4. Step 4: Simplify right side
    13,801.30x = 149,150,062.99
  5. Step 5: Solve for x
    x = 149,150,062.99/13,801.30
  6. Step 6: Final answer
    x = 10,806.96

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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.