Home / 21,828.87-32,715.90-9,334.20

Finding the Fourth Proportional to 21,828.87, 32,715.90 and 9,334.20

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Solution

The fourth proportional to 21,828.87, 32,715.90 and 9,334.20 is: 13,989.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.87 : 32,715.90 = 9,334.20 : x
  2. Step 2: Convert to fraction form
    21,828.87/32,715.90 = 9,334.20/x
  3. Step 3: Cross multiply
    21,828.87x = 32,715.90 × 9,334.20
  4. Step 4: Simplify right side
    21,828.87x = 305,376,753.78
  5. Step 5: Solve for x
    x = 305,376,753.78/21,828.87
  6. Step 6: Final answer
    x = 13,989.58

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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.