Home / 12,831.40-19,247.10-7,282.60

Finding the Fourth Proportional to 12,831.40, 19,247.10 and 7,282.60

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Solution

The fourth proportional to 12,831.40, 19,247.10 and 7,282.60 is: 10,923.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831.40 : 19,247.10 = 7,282.60 : x
  2. Step 2: Convert to fraction form
    12,831.40/19,247.10 = 7,282.60/x
  3. Step 3: Cross multiply
    12,831.40x = 19,247.10 × 7,282.60
  4. Step 4: Simplify right side
    12,831.40x = 140,168,930.46
  5. Step 5: Solve for x
    x = 140,168,930.46/12,831.40
  6. Step 6: Final answer
    x = 10,923.90

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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.