Home / 21,587,087.07-29,793,865.64-12,885,708.51

Finding the Fourth Proportional to 21,587,087.07, 29,793,865.64 and 12,885,708.51

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Solution

The fourth proportional to 21,587,087.07, 29,793,865.64 and 12,885,708.51 is: 17,784,477.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,587,087.07 : 29,793,865.64 = 12,885,708.51 : x
  2. Step 2: Convert to fraction form
    21,587,087.07/29,793,865.64 = 12,885,708.51/x
  3. Step 3: Cross multiply
    21,587,087.07x = 29,793,865.64 × 12,885,708.51
  4. Step 4: Simplify right side
    21,587,087.07x = 383,915,067,958,716.06
  5. Step 5: Solve for x
    x = 383,915,067,958,716.06/21,587,087.07
  6. Step 6: Final answer
    x = 17,784,477.67

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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.