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Finding the Fourth Proportional to 12,480.44, 18,719.94 and 7,548.76

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Solution

The fourth proportional to 12,480.44, 18,719.94 and 7,548.76 is: 11,322.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.44 : 18,719.94 = 7,548.76 : x
  2. Step 2: Convert to fraction form
    12,480.44/18,719.94 = 7,548.76/x
  3. Step 3: Cross multiply
    12,480.44x = 18,719.94 × 7,548.76
  4. Step 4: Simplify right side
    12,480.44x = 141,312,334.27
  5. Step 5: Solve for x
    x = 141,312,334.27/12,480.44
  6. Step 6: Final answer
    x = 11,322.70

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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.