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Finding the Fourth Proportional to 13,146, 18,144.56 and 8,670.56

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Solution

The fourth proportional to 13,146, 18,144.56 and 8,670.56 is: 11,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146 : 18,144.56 = 8,670.56 : x
  2. Step 2: Convert to fraction form
    13,146/18,144.56 = 8,670.56/x
  3. Step 3: Cross multiply
    13,146x = 18,144.56 × 8,670.56
  4. Step 4: Simplify right side
    13,146x = 157,323,496.15
  5. Step 5: Solve for x
    x = 157,323,496.15/13,146
  6. Step 6: Final answer
    x = 11,967.40

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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.