Home / 13,121.55-19,669.92-5,228.94

Finding the Fourth Proportional to 13,121.55, 19,669.92 and 5,228.94

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Solution

The fourth proportional to 13,121.55, 19,669.92 and 5,228.94 is: 7,838.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.55 : 19,669.92 = 5,228.94 : x
  2. Step 2: Convert to fraction form
    13,121.55/19,669.92 = 5,228.94/x
  3. Step 3: Cross multiply
    13,121.55x = 19,669.92 × 5,228.94
  4. Step 4: Simplify right side
    13,121.55x = 102,852,831.48
  5. Step 5: Solve for x
    x = 102,852,831.48/13,121.55
  6. Step 6: Final answer
    x = 7,838.47

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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.