Home / 18,831.30-28,248.03-5,685

Finding the Fourth Proportional to 18,831.30, 28,248.03 and 5,685

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Solution

The fourth proportional to 18,831.30, 28,248.03 and 5,685 is: 8,527.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.30 : 28,248.03 = 5,685 : x
  2. Step 2: Convert to fraction form
    18,831.30/28,248.03 = 5,685/x
  3. Step 3: Cross multiply
    18,831.30x = 28,248.03 × 5,685
  4. Step 4: Simplify right side
    18,831.30x = 160,590,050.55
  5. Step 5: Solve for x
    x = 160,590,050.55/18,831.30
  6. Step 6: Final answer
    x = 8,527.83

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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.