Home / 12,879.81-19,319.85-6,219.18

Finding the Fourth Proportional to 12,879.81, 19,319.85 and 6,219.18

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Solution

The fourth proportional to 12,879.81, 19,319.85 and 6,219.18 is: 9,328.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.81 : 19,319.85 = 6,219.18 : x
  2. Step 2: Convert to fraction form
    12,879.81/19,319.85 = 6,219.18/x
  3. Step 3: Cross multiply
    12,879.81x = 19,319.85 × 6,219.18
  4. Step 4: Simplify right side
    12,879.81x = 120,153,624.72
  5. Step 5: Solve for x
    x = 120,153,624.72/12,879.81
  6. Step 6: Final answer
    x = 9,328.84

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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.