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Finding the Fourth Proportional to 12,999.56, 17,946.02 and 9,013.75

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Solution

The fourth proportional to 12,999.56, 17,946.02 and 9,013.75 is: 12,443.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.56 : 17,946.02 = 9,013.75 : x
  2. Step 2: Convert to fraction form
    12,999.56/17,946.02 = 9,013.75/x
  3. Step 3: Cross multiply
    12,999.56x = 17,946.02 × 9,013.75
  4. Step 4: Simplify right side
    12,999.56x = 161,760,915.44
  5. Step 5: Solve for x
    x = 161,760,915.44/12,999.56
  6. Step 6: Final answer
    x = 12,443.57

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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.