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Finding the Fourth Proportional to 19,889.62, 27,448.41 and 10,937.91

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Solution

The fourth proportional to 19,889.62, 27,448.41 and 10,937.91 is: 15,094.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,889.62 : 27,448.41 = 10,937.91 : x
  2. Step 2: Convert to fraction form
    19,889.62/27,448.41 = 10,937.91/x
  3. Step 3: Cross multiply
    19,889.62x = 27,448.41 × 10,937.91
  4. Step 4: Simplify right side
    19,889.62x = 300,228,238.22
  5. Step 5: Solve for x
    x = 300,228,238.22/19,889.62
  6. Step 6: Final answer
    x = 15,094.72

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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.