Home / 15,200.84-20,976.08-8,912

Finding the Fourth Proportional to 15,200.84, 20,976.08 and 8,912

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Solution

The fourth proportional to 15,200.84, 20,976.08 and 8,912 is: 12,297.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.84 : 20,976.08 = 8,912 : x
  2. Step 2: Convert to fraction form
    15,200.84/20,976.08 = 8,912/x
  3. Step 3: Cross multiply
    15,200.84x = 20,976.08 × 8,912
  4. Step 4: Simplify right side
    15,200.84x = 186,938,824.96
  5. Step 5: Solve for x
    x = 186,938,824.96/15,200.84
  6. Step 6: Final answer
    x = 12,297.93

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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.