Home / 12,982.90-19,474.35-4,218.70

Finding the Fourth Proportional to 12,982.90, 19,474.35 and 4,218.70

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Solution

The fourth proportional to 12,982.90, 19,474.35 and 4,218.70 is: 6,328.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,982.90 : 19,474.35 = 4,218.70 : x
  2. Step 2: Convert to fraction form
    12,982.90/19,474.35 = 4,218.70/x
  3. Step 3: Cross multiply
    12,982.90x = 19,474.35 × 4,218.70
  4. Step 4: Simplify right side
    12,982.90x = 82,156,440.35
  5. Step 5: Solve for x
    x = 82,156,440.35/12,982.90
  6. Step 6: Final answer
    x = 6,328.05

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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.