Home / 20,190,137.10-30,285,205.65-7,408,981.05

Finding the Fourth Proportional to 20,190,137.10, 30,285,205.65 and 7,408,981.05

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Solution

The fourth proportional to 20,190,137.10, 30,285,205.65 and 7,408,981.05 is: 11,113,471.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190,137.10 : 30,285,205.65 = 7,408,981.05 : x
  2. Step 2: Convert to fraction form
    20,190,137.10/30,285,205.65 = 7,408,981.05/x
  3. Step 3: Cross multiply
    20,190,137.10x = 30,285,205.65 × 7,408,981.05
  4. Step 4: Simplify right side
    20,190,137.10x = 224,382,514,756,202.91
  5. Step 5: Solve for x
    x = 224,382,514,756,202.91/20,190,137.10
  6. Step 6: Final answer
    x = 11,113,471.58

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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.