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Finding the Fourth Proportional to 19,230.20, 28,796.70 and 15,342.20

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Solution

The fourth proportional to 19,230.20, 28,796.70 and 15,342.20 is: 22,974.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,230.20 : 28,796.70 = 15,342.20 : x
  2. Step 2: Convert to fraction form
    19,230.20/28,796.70 = 15,342.20/x
  3. Step 3: Cross multiply
    19,230.20x = 28,796.70 × 15,342.20
  4. Step 4: Simplify right side
    19,230.20x = 441,804,730.74
  5. Step 5: Solve for x
    x = 441,804,730.74/19,230.20
  6. Step 6: Final answer
    x = 22,974.53

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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.