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Finding the Fourth Proportional to 19,304.51, 28,961.76 and 5,453.51

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Solution

The fourth proportional to 19,304.51, 28,961.76 and 5,453.51 is: 8,181.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,304.51 : 28,961.76 = 5,453.51 : x
  2. Step 2: Convert to fraction form
    19,304.51/28,961.76 = 5,453.51/x
  3. Step 3: Cross multiply
    19,304.51x = 28,961.76 × 5,453.51
  4. Step 4: Simplify right side
    19,304.51x = 157,943,247.78
  5. Step 5: Solve for x
    x = 157,943,247.78/19,304.51
  6. Step 6: Final answer
    x = 8,181.68

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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.