Home / 13,624.15-20,436.19-3,763.40

Finding the Fourth Proportional to 13,624.15, 20,436.19 and 3,763.40

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Solution

The fourth proportional to 13,624.15, 20,436.19 and 3,763.40 is: 5,645.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,624.15 : 20,436.19 = 3,763.40 : x
  2. Step 2: Convert to fraction form
    13,624.15/20,436.19 = 3,763.40/x
  3. Step 3: Cross multiply
    13,624.15x = 20,436.19 × 3,763.40
  4. Step 4: Simplify right side
    13,624.15x = 76,909,459.97
  5. Step 5: Solve for x
    x = 76,909,459.97/13,624.15
  6. Step 6: Final answer
    x = 5,645.08

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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.