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Finding the Fourth Proportional to 19,705.08, 27,204.08 and 13,664.08

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Solution

The fourth proportional to 19,705.08, 27,204.08 and 13,664.08 is: 18,864.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,705.08 : 27,204.08 = 13,664.08 : x
  2. Step 2: Convert to fraction form
    19,705.08/27,204.08 = 13,664.08/x
  3. Step 3: Cross multiply
    19,705.08x = 27,204.08 × 13,664.08
  4. Step 4: Simplify right side
    19,705.08x = 371,718,725.45
  5. Step 5: Solve for x
    x = 371,718,725.45/19,705.08
  6. Step 6: Final answer
    x = 18,864.11

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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.