Home / 13,324.40-19,954.20-6,390.80

Finding the Fourth Proportional to 13,324.40, 19,954.20 and 6,390.80

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Solution

The fourth proportional to 13,324.40, 19,954.20 and 6,390.80 is: 9,570.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,324.40 : 19,954.20 = 6,390.80 : x
  2. Step 2: Convert to fraction form
    13,324.40/19,954.20 = 6,390.80/x
  3. Step 3: Cross multiply
    13,324.40x = 19,954.20 × 6,390.80
  4. Step 4: Simplify right side
    13,324.40x = 127,523,301.36
  5. Step 5: Solve for x
    x = 127,523,301.36/13,324.40
  6. Step 6: Final answer
    x = 9,570.66

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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.