Home / 13,624.16-20,431.92-4,388

Finding the Fourth Proportional to 13,624.16, 20,431.92 and 4,388

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Solution

The fourth proportional to 13,624.16, 20,431.92 and 4,388 is: 6,580.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,624.16 : 20,431.92 = 4,388 : x
  2. Step 2: Convert to fraction form
    13,624.16/20,431.92 = 4,388/x
  3. Step 3: Cross multiply
    13,624.16x = 20,431.92 × 4,388
  4. Step 4: Simplify right side
    13,624.16x = 89,655,264.96
  5. Step 5: Solve for x
    x = 89,655,264.96/13,624.16
  6. Step 6: Final answer
    x = 6,580.61

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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.