Home / 19,412.30-29,118.46-8,311.78

Finding the Fourth Proportional to 19,412.30, 29,118.46 and 8,311.78

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Solution

The fourth proportional to 19,412.30, 29,118.46 and 8,311.78 is: 12,467.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,412.30 : 29,118.46 = 8,311.78 : x
  2. Step 2: Convert to fraction form
    19,412.30/29,118.46 = 8,311.78/x
  3. Step 3: Cross multiply
    19,412.30x = 29,118.46 × 8,311.78
  4. Step 4: Simplify right side
    19,412.30x = 242,026,233.46
  5. Step 5: Solve for x
    x = 242,026,233.46/19,412.30
  6. Step 6: Final answer
    x = 12,467.67

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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.