Home / 12,821.21-19,234.65-4,056.20

Finding the Fourth Proportional to 12,821.21, 19,234.65 and 4,056.20

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Solution

The fourth proportional to 12,821.21, 19,234.65 and 4,056.20 is: 6,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.21 : 19,234.65 = 4,056.20 : x
  2. Step 2: Convert to fraction form
    12,821.21/19,234.65 = 4,056.20/x
  3. Step 3: Cross multiply
    12,821.21x = 19,234.65 × 4,056.20
  4. Step 4: Simplify right side
    12,821.21x = 78,019,587.33
  5. Step 5: Solve for x
    x = 78,019,587.33/12,821.21
  6. Step 6: Final answer
    x = 6,085.20

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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.