Home / 18,831.16-28,237.76-6,976.80

Finding the Fourth Proportional to 18,831.16, 28,237.76 and 6,976.80

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Solution

The fourth proportional to 18,831.16, 28,237.76 and 6,976.80 is: 10,461.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.16 : 28,237.76 = 6,976.80 : x
  2. Step 2: Convert to fraction form
    18,831.16/28,237.76 = 6,976.80/x
  3. Step 3: Cross multiply
    18,831.16x = 28,237.76 × 6,976.80
  4. Step 4: Simplify right side
    18,831.16x = 197,009,203.97
  5. Step 5: Solve for x
    x = 197,009,203.97/18,831.16
  6. Step 6: Final answer
    x = 10,461.87

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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.