Home / 21,622.89-32,420.34-8,476.59

Finding the Fourth Proportional to 21,622.89, 32,420.34 and 8,476.59

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Solution

The fourth proportional to 21,622.89, 32,420.34 and 8,476.59 is: 12,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.89 : 32,420.34 = 8,476.59 : x
  2. Step 2: Convert to fraction form
    21,622.89/32,420.34 = 8,476.59/x
  3. Step 3: Cross multiply
    21,622.89x = 32,420.34 × 8,476.59
  4. Step 4: Simplify right side
    21,622.89x = 274,813,929.84
  5. Step 5: Solve for x
    x = 274,813,929.84/21,622.89
  6. Step 6: Final answer
    x = 12,709.40

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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.