Home / 30,330.62-45,500.78-12,803.04

Finding the Fourth Proportional to 30,330.62, 45,500.78 and 12,803.04

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Solution

The fourth proportional to 30,330.62, 45,500.78 and 12,803.04 is: 19,206.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,330.62 : 45,500.78 = 12,803.04 : x
  2. Step 2: Convert to fraction form
    30,330.62/45,500.78 = 12,803.04/x
  3. Step 3: Cross multiply
    30,330.62x = 45,500.78 × 12,803.04
  4. Step 4: Simplify right side
    30,330.62x = 582,548,306.37
  5. Step 5: Solve for x
    x = 582,548,306.37/30,330.62
  6. Step 6: Final answer
    x = 19,206.61

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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.