Home / 20,136,705.10-30,205,057.65-12,483,954.70

Finding the Fourth Proportional to 20,136,705.10, 30,205,057.65 and 12,483,954.70

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Solution

The fourth proportional to 20,136,705.10, 30,205,057.65 and 12,483,954.70 is: 18,725,932.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136,705.10 : 30,205,057.65 = 12,483,954.70 : x
  2. Step 2: Convert to fraction form
    20,136,705.10/30,205,057.65 = 12,483,954.70/x
  3. Step 3: Cross multiply
    20,136,705.10x = 30,205,057.65 × 12,483,954.70
  4. Step 4: Simplify right side
    20,136,705.10x = 377,078,571,413,488.44
  5. Step 5: Solve for x
    x = 377,078,571,413,488.44/20,136,705.10
  6. Step 6: Final answer
    x = 18,725,932.05

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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.