Home / 12,831.06-19,230.85-7,289.07

Finding the Fourth Proportional to 12,831.06, 19,230.85 and 7,289.07

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Solution

The fourth proportional to 12,831.06, 19,230.85 and 7,289.07 is: 10,924.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831.06 : 19,230.85 = 7,289.07 : x
  2. Step 2: Convert to fraction form
    12,831.06/19,230.85 = 7,289.07/x
  3. Step 3: Cross multiply
    12,831.06x = 19,230.85 × 7,289.07
  4. Step 4: Simplify right side
    12,831.06x = 140,175,011.81
  5. Step 5: Solve for x
    x = 140,175,011.81/12,831.06
  6. Step 6: Final answer
    x = 10,924.66

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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.