Home / 19,680.84-29,522.88-8,580.60

Finding the Fourth Proportional to 19,680.84, 29,522.88 and 8,580.60

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Solution

The fourth proportional to 19,680.84, 29,522.88 and 8,580.60 is: 12,871.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.84 : 29,522.88 = 8,580.60 : x
  2. Step 2: Convert to fraction form
    19,680.84/29,522.88 = 8,580.60/x
  3. Step 3: Cross multiply
    19,680.84x = 29,522.88 × 8,580.60
  4. Step 4: Simplify right side
    19,680.84x = 253,324,024.13
  5. Step 5: Solve for x
    x = 253,324,024.13/19,680.84
  6. Step 6: Final answer
    x = 12,871.61

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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.