Home / 18,831.46-28,212.76-8,817.84

Finding the Fourth Proportional to 18,831.46, 28,212.76 and 8,817.84

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Solution

The fourth proportional to 18,831.46, 28,212.76 and 8,817.84 is: 13,210.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.46 : 28,212.76 = 8,817.84 : x
  2. Step 2: Convert to fraction form
    18,831.46/28,212.76 = 8,817.84/x
  3. Step 3: Cross multiply
    18,831.46x = 28,212.76 × 8,817.84
  4. Step 4: Simplify right side
    18,831.46x = 248,775,603.64
  5. Step 5: Solve for x
    x = 248,775,603.64/18,831.46
  6. Step 6: Final answer
    x = 13,210.64

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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.