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Finding the Fourth Proportional to 30,213.54, 45,320.99 and 8,029.16

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Solution

The fourth proportional to 30,213.54, 45,320.99 and 8,029.16 is: 12,043.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,213.54 : 45,320.99 = 8,029.16 : x
  2. Step 2: Convert to fraction form
    30,213.54/45,320.99 = 8,029.16/x
  3. Step 3: Cross multiply
    30,213.54x = 45,320.99 × 8,029.16
  4. Step 4: Simplify right side
    30,213.54x = 363,889,213.32
  5. Step 5: Solve for x
    x = 363,889,213.32/30,213.54
  6. Step 6: Final answer
    x = 12,043.91

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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.