Home / 15,795.28-21,797.58-8,722

Finding the Fourth Proportional to 15,795.28, 21,797.58 and 8,722

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Solution

The fourth proportional to 15,795.28, 21,797.58 and 8,722 is: 12,036.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,795.28 : 21,797.58 = 8,722 : x
  2. Step 2: Convert to fraction form
    15,795.28/21,797.58 = 8,722/x
  3. Step 3: Cross multiply
    15,795.28x = 21,797.58 × 8,722
  4. Step 4: Simplify right side
    15,795.28x = 190,118,492.76
  5. Step 5: Solve for x
    x = 190,118,492.76/15,795.28
  6. Step 6: Final answer
    x = 12,036.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.