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Finding the Fourth Proportional to 12,007.12, 18,016.08 and 7,623.40

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Solution

The fourth proportional to 12,007.12, 18,016.08 and 7,623.40 is: 11,438.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.12 : 18,016.08 = 7,623.40 : x
  2. Step 2: Convert to fraction form
    12,007.12/18,016.08 = 7,623.40/x
  3. Step 3: Cross multiply
    12,007.12x = 18,016.08 × 7,623.40
  4. Step 4: Simplify right side
    12,007.12x = 137,343,784.27
  5. Step 5: Solve for x
    x = 137,343,784.27/12,007.12
  6. Step 6: Final answer
    x = 11,438.53

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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.