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Finding the Fourth Proportional to 30,721.72, 46,083.46 and 8,536.72

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Solution

The fourth proportional to 30,721.72, 46,083.46 and 8,536.72 is: 12,805.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,721.72 : 46,083.46 = 8,536.72 : x
  2. Step 2: Convert to fraction form
    30,721.72/46,083.46 = 8,536.72/x
  3. Step 3: Cross multiply
    30,721.72x = 46,083.46 × 8,536.72
  4. Step 4: Simplify right side
    30,721.72x = 393,401,594.65
  5. Step 5: Solve for x
    x = 393,401,594.65/30,721.72
  6. Step 6: Final answer
    x = 12,805.32

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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.