Home / 12,909.96-19,366.08-4,143.12

Finding the Fourth Proportional to 12,909.96, 19,366.08 and 4,143.12

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Solution

The fourth proportional to 12,909.96, 19,366.08 and 4,143.12 is: 6,215.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.96 : 19,366.08 = 4,143.12 : x
  2. Step 2: Convert to fraction form
    12,909.96/19,366.08 = 4,143.12/x
  3. Step 3: Cross multiply
    12,909.96x = 19,366.08 × 4,143.12
  4. Step 4: Simplify right side
    12,909.96x = 80,235,993.37
  5. Step 5: Solve for x
    x = 80,235,993.37/12,909.96
  6. Step 6: Final answer
    x = 6,215.05

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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.