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Finding the Fourth Proportional to 18,136.88, 27,220.32 and 9,258.77

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Solution

The fourth proportional to 18,136.88, 27,220.32 and 9,258.77 is: 13,895.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,136.88 : 27,220.32 = 9,258.77 : x
  2. Step 2: Convert to fraction form
    18,136.88/27,220.32 = 9,258.77/x
  3. Step 3: Cross multiply
    18,136.88x = 27,220.32 × 9,258.77
  4. Step 4: Simplify right side
    18,136.88x = 252,026,750.26
  5. Step 5: Solve for x
    x = 252,026,750.26/18,136.88
  6. Step 6: Final answer
    x = 13,895.82

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1.5x scale

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.