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Finding the Fourth Proportional to 12,007.52, 16,547.46 and 8,644.40

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Solution

The fourth proportional to 12,007.52, 16,547.46 and 8,644.40 is: 11,912.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.52 : 16,547.46 = 8,644.40 : x
  2. Step 2: Convert to fraction form
    12,007.52/16,547.46 = 8,644.40/x
  3. Step 3: Cross multiply
    12,007.52x = 16,547.46 × 8,644.40
  4. Step 4: Simplify right side
    12,007.52x = 143,042,863.22
  5. Step 5: Solve for x
    x = 143,042,863.22/12,007.52
  6. Step 6: Final answer
    x = 11,912.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.