Home / 28,685,399-39,585,851.43-15,808,343

Finding the Fourth Proportional to 28,685,399, 39,585,851.43 and 15,808,343

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Solution

The fourth proportional to 28,685,399, 39,585,851.43 and 15,808,343 is: 21,815,513.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685,399 : 39,585,851.43 = 15,808,343 : x
  2. Step 2: Convert to fraction form
    28,685,399/39,585,851.43 = 15,808,343/x
  3. Step 3: Cross multiply
    28,685,399x = 39,585,851.43 × 15,808,343
  4. Step 4: Simplify right side
    28,685,399x = 625,786,717,352,480.50
  5. Step 5: Solve for x
    x = 625,786,717,352,480.50/28,685,399
  6. Step 6: Final answer
    x = 21,815,513.79

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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.