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Finding the Fourth Proportional to 12,016.64, 18,024.96 and 7,860.14

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Solution

The fourth proportional to 12,016.64, 18,024.96 and 7,860.14 is: 11,790.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,016.64 : 18,024.96 = 7,860.14 : x
  2. Step 2: Convert to fraction form
    12,016.64/18,024.96 = 7,860.14/x
  3. Step 3: Cross multiply
    12,016.64x = 18,024.96 × 7,860.14
  4. Step 4: Simplify right side
    12,016.64x = 141,678,754.16
  5. Step 5: Solve for x
    x = 141,678,754.16/12,016.64
  6. Step 6: Final answer
    x = 11,790.21

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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.