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Finding the Fourth Proportional to 28,952.70, 43,319.70 and 19,111.20

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Solution

The fourth proportional to 28,952.70, 43,319.70 and 19,111.20 is: 28,594.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,952.70 : 43,319.70 = 19,111.20 : x
  2. Step 2: Convert to fraction form
    28,952.70/43,319.70 = 19,111.20/x
  3. Step 3: Cross multiply
    28,952.70x = 43,319.70 × 19,111.20
  4. Step 4: Simplify right side
    28,952.70x = 827,891,450.64
  5. Step 5: Solve for x
    x = 827,891,450.64/28,952.70
  6. Step 6: Final answer
    x = 28,594.62

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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.