Home / 21,888,336.35-30,205,900.88-11,965,255.78

Finding the Fourth Proportional to 21,888,336.35, 30,205,900.88 and 11,965,255.78

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Solution

The fourth proportional to 21,888,336.35, 30,205,900.88 and 11,965,255.78 is: 16,512,051.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888,336.35 : 30,205,900.88 = 11,965,255.78 : x
  2. Step 2: Convert to fraction form
    21,888,336.35/30,205,900.88 = 11,965,255.78/x
  3. Step 3: Cross multiply
    21,888,336.35x = 30,205,900.88 × 11,965,255.78
  4. Step 4: Simplify right side
    21,888,336.35x = 361,421,330,094,527.06
  5. Step 5: Solve for x
    x = 361,421,330,094,527.06/21,888,336.35
  6. Step 6: Final answer
    x = 16,512,051.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.