Home / 20,415,044.70-30,622,567.05-12,856,772.70

Finding the Fourth Proportional to 20,415,044.70, 30,622,567.05 and 12,856,772.70

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Solution

The fourth proportional to 20,415,044.70, 30,622,567.05 and 12,856,772.70 is: 19,285,159.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415,044.70 : 30,622,567.05 = 12,856,772.70 : x
  2. Step 2: Convert to fraction form
    20,415,044.70/30,622,567.05 = 12,856,772.70/x
  3. Step 3: Cross multiply
    20,415,044.70x = 30,622,567.05 × 12,856,772.70
  4. Step 4: Simplify right side
    20,415,044.70x = 393,707,384,052,359.50
  5. Step 5: Solve for x
    x = 393,707,384,052,359.50/20,415,044.70
  6. Step 6: Final answer
    x = 19,285,159.05

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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.