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Finding the Fourth Proportional to 12,261.56, 18,391.98 and 7,297.99

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Solution

The fourth proportional to 12,261.56, 18,391.98 and 7,297.99 is: 10,946.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.56 : 18,391.98 = 7,297.99 : x
  2. Step 2: Convert to fraction form
    12,261.56/18,391.98 = 7,297.99/x
  3. Step 3: Cross multiply
    12,261.56x = 18,391.98 × 7,297.99
  4. Step 4: Simplify right side
    12,261.56x = 134,224,449.63
  5. Step 5: Solve for x
    x = 134,224,449.63/12,261.56
  6. Step 6: Final answer
    x = 10,946.77

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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.