Home / 18,831.47-28,217.21-9,946.49

Finding the Fourth Proportional to 18,831.47, 28,217.21 and 9,946.49

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Solution

The fourth proportional to 18,831.47, 28,217.21 and 9,946.49 is: 14,903.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.47 : 28,217.21 = 9,946.49 : x
  2. Step 2: Convert to fraction form
    18,831.47/28,217.21 = 9,946.49/x
  3. Step 3: Cross multiply
    18,831.47x = 28,217.21 × 9,946.49
  4. Step 4: Simplify right side
    18,831.47x = 280,662,006.27
  5. Step 5: Solve for x
    x = 280,662,006.27/18,831.47
  6. Step 6: Final answer
    x = 14,903.89

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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.