Home / 12,128,366.70-18,192,550.05-11,650,069.80

Finding the Fourth Proportional to 12,128,366.70, 18,192,550.05 and 11,650,069.80

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Solution

The fourth proportional to 12,128,366.70, 18,192,550.05 and 11,650,069.80 is: 17,475,104.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,366.70 : 18,192,550.05 = 11,650,069.80 : x
  2. Step 2: Convert to fraction form
    12,128,366.70/18,192,550.05 = 11,650,069.80/x
  3. Step 3: Cross multiply
    12,128,366.70x = 18,192,550.05 × 11,650,069.80
  4. Step 4: Simplify right side
    12,128,366.70x = 211,944,477,922,493.50
  5. Step 5: Solve for x
    x = 211,944,477,922,493.50/12,128,366.70
  6. Step 6: Final answer
    x = 17,475,104.70

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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.