Home / 21,401.73-32,099.85-8,919.45

Finding the Fourth Proportional to 21,401.73, 32,099.85 and 8,919.45

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Solution

The fourth proportional to 21,401.73, 32,099.85 and 8,919.45 is: 13,378.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,401.73 : 32,099.85 = 8,919.45 : x
  2. Step 2: Convert to fraction form
    21,401.73/32,099.85 = 8,919.45/x
  3. Step 3: Cross multiply
    21,401.73x = 32,099.85 × 8,919.45
  4. Step 4: Simplify right side
    21,401.73x = 286,313,007.08
  5. Step 5: Solve for x
    x = 286,313,007.08/21,401.73
  6. Step 6: Final answer
    x = 13,378.03

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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.