Home / 11,219.88-15,474.36-9,872.60

Finding the Fourth Proportional to 11,219.88, 15,474.36 and 9,872.60

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Solution

The fourth proportional to 11,219.88, 15,474.36 and 9,872.60 is: 13,616.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,219.88 : 15,474.36 = 9,872.60 : x
  2. Step 2: Convert to fraction form
    11,219.88/15,474.36 = 9,872.60/x
  3. Step 3: Cross multiply
    11,219.88x = 15,474.36 × 9,872.60
  4. Step 4: Simplify right side
    11,219.88x = 152,772,166.54
  5. Step 5: Solve for x
    x = 152,772,166.54/11,219.88
  6. Step 6: Final answer
    x = 13,616.20

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1.5x scale

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.