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Finding the Fourth Proportional to 19,659.17, 27,122.04 and 12,948.12

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Solution

The fourth proportional to 19,659.17, 27,122.04 and 12,948.12 is: 17,863.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.17 : 27,122.04 = 12,948.12 : x
  2. Step 2: Convert to fraction form
    19,659.17/27,122.04 = 12,948.12/x
  3. Step 3: Cross multiply
    19,659.17x = 27,122.04 × 12,948.12
  4. Step 4: Simplify right side
    19,659.17x = 351,179,428.56
  5. Step 5: Solve for x
    x = 351,179,428.56/19,659.17
  6. Step 6: Final answer
    x = 17,863.39

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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.