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Finding the Fourth Proportional to 12,959.56, 17,885.94 and 7,370.44

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Solution

The fourth proportional to 12,959.56, 17,885.94 and 7,370.44 is: 10,172.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,959.56 : 17,885.94 = 7,370.44 : x
  2. Step 2: Convert to fraction form
    12,959.56/17,885.94 = 7,370.44/x
  3. Step 3: Cross multiply
    12,959.56x = 17,885.94 × 7,370.44
  4. Step 4: Simplify right side
    12,959.56x = 131,827,247.61
  5. Step 5: Solve for x
    x = 131,827,247.61/12,959.56
  6. Step 6: Final answer
    x = 10,172.20

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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.