Home / 13,120.90-19,674.06-5,222.79

Finding the Fourth Proportional to 13,120.90, 19,674.06 and 5,222.79

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Solution

The fourth proportional to 13,120.90, 19,674.06 and 5,222.79 is: 7,831.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.90 : 19,674.06 = 5,222.79 : x
  2. Step 2: Convert to fraction form
    13,120.90/19,674.06 = 5,222.79/x
  3. Step 3: Cross multiply
    13,120.90x = 19,674.06 × 5,222.79
  4. Step 4: Simplify right side
    13,120.90x = 102,753,464.24
  5. Step 5: Solve for x
    x = 102,753,464.24/13,120.90
  6. Step 6: Final answer
    x = 7,831.28

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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.