Home / 18,871.08-28,304.88-6,389.67

Finding the Fourth Proportional to 18,871.08, 28,304.88 and 6,389.67

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Solution

The fourth proportional to 18,871.08, 28,304.88 and 6,389.67 is: 9,583.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.08 : 28,304.88 = 6,389.67 : x
  2. Step 2: Convert to fraction form
    18,871.08/28,304.88 = 6,389.67/x
  3. Step 3: Cross multiply
    18,871.08x = 28,304.88 × 6,389.67
  4. Step 4: Simplify right side
    18,871.08x = 180,858,842.59
  5. Step 5: Solve for x
    x = 180,858,842.59/18,871.08
  6. Step 6: Final answer
    x = 9,583.92

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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.