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Finding the Fourth Proportional to 19,912.62, 27,483.08 and 11,529.12

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Solution

The fourth proportional to 19,912.62, 27,483.08 and 11,529.12 is: 15,912.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,912.62 : 27,483.08 = 11,529.12 : x
  2. Step 2: Convert to fraction form
    19,912.62/27,483.08 = 11,529.12/x
  3. Step 3: Cross multiply
    19,912.62x = 27,483.08 × 11,529.12
  4. Step 4: Simplify right side
    19,912.62x = 316,855,727.29
  5. Step 5: Solve for x
    x = 316,855,727.29/19,912.62
  6. Step 6: Final answer
    x = 15,912.31

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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.