Home / 28,778,679.83-39,714,683.92-15,725,940.71

Finding the Fourth Proportional to 28,778,679.83, 39,714,683.92 and 15,725,940.71

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Solution

The fourth proportional to 28,778,679.83, 39,714,683.92 and 15,725,940.71 is: 21,701,855.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778,679.83 : 39,714,683.92 = 15,725,940.71 : x
  2. Step 2: Convert to fraction form
    28,778,679.83/39,714,683.92 = 15,725,940.71/x
  3. Step 3: Cross multiply
    28,778,679.83x = 39,714,683.92 × 15,725,940.71
  4. Step 4: Simplify right side
    28,778,679.83x = 624,550,764,404,422.12
  5. Step 5: Solve for x
    x = 624,550,764,404,422.12/28,778,679.83
  6. Step 6: Final answer
    x = 21,701,855.96

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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.