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Finding the Fourth Proportional to 30,198.62, 45,300.16 and 8,011.51

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Solution

The fourth proportional to 30,198.62, 45,300.16 and 8,011.51 is: 12,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,198.62 : 45,300.16 = 8,011.51 : x
  2. Step 2: Convert to fraction form
    30,198.62/45,300.16 = 8,011.51/x
  3. Step 3: Cross multiply
    30,198.62x = 45,300.16 × 8,011.51
  4. Step 4: Simplify right side
    30,198.62x = 362,922,581.61
  5. Step 5: Solve for x
    x = 362,922,581.61/30,198.62
  6. Step 6: Final answer
    x = 12,017.85

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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.