Home / 12,976.40-19,458.20-4,210.18

Finding the Fourth Proportional to 12,976.40, 19,458.20 and 4,210.18

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Solution

The fourth proportional to 12,976.40, 19,458.20 and 4,210.18 is: 6,313.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.40 : 19,458.20 = 4,210.18 : x
  2. Step 2: Convert to fraction form
    12,976.40/19,458.20 = 4,210.18/x
  3. Step 3: Cross multiply
    12,976.40x = 19,458.20 × 4,210.18
  4. Step 4: Simplify right side
    12,976.40x = 81,922,524.48
  5. Step 5: Solve for x
    x = 81,922,524.48/12,976.40
  6. Step 6: Final answer
    x = 6,313.19

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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.