Home / 21,939.50-32,913.36-8,792.90

Finding the Fourth Proportional to 21,939.50, 32,913.36 and 8,792.90

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Solution

The fourth proportional to 21,939.50, 32,913.36 and 8,792.90 is: 13,190.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.50 : 32,913.36 = 8,792.90 : x
  2. Step 2: Convert to fraction form
    21,939.50/32,913.36 = 8,792.90/x
  3. Step 3: Cross multiply
    21,939.50x = 32,913.36 × 8,792.90
  4. Step 4: Simplify right side
    21,939.50x = 289,403,842.00
  5. Step 5: Solve for x
    x = 289,403,842.00/21,939.50
  6. Step 6: Final answer
    x = 13,190.99

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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.