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Finding the Fourth Proportional to 13,172.34, 19,736.16 and 7,967.28

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Solution

The fourth proportional to 13,172.34, 19,736.16 and 7,967.28 is: 11,937.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.34 : 19,736.16 = 7,967.28 : x
  2. Step 2: Convert to fraction form
    13,172.34/19,736.16 = 7,967.28/x
  3. Step 3: Cross multiply
    13,172.34x = 19,736.16 × 7,967.28
  4. Step 4: Simplify right side
    13,172.34x = 157,243,512.84
  5. Step 5: Solve for x
    x = 157,243,512.84/13,172.34
  6. Step 6: Final answer
    x = 11,937.40

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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.