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Finding the Fourth Proportional to 19,215.44, 28,816.64 and 9,348.44

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Solution

The fourth proportional to 19,215.44, 28,816.64 and 9,348.44 is: 14,019.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.44 : 28,816.64 = 9,348.44 : x
  2. Step 2: Convert to fraction form
    19,215.44/28,816.64 = 9,348.44/x
  3. Step 3: Cross multiply
    19,215.44x = 28,816.64 × 9,348.44
  4. Step 4: Simplify right side
    19,215.44x = 269,390,630.04
  5. Step 5: Solve for x
    x = 269,390,630.04/19,215.44
  6. Step 6: Final answer
    x = 14,019.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.