Home / 20,128,511.70-30,192,767.55-7,358,181.30

Finding the Fourth Proportional to 20,128,511.70, 30,192,767.55 and 7,358,181.30

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Solution

The fourth proportional to 20,128,511.70, 30,192,767.55 and 7,358,181.30 is: 11,037,271.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128,511.70 : 30,192,767.55 = 7,358,181.30 : x
  2. Step 2: Convert to fraction form
    20,128,511.70/30,192,767.55 = 7,358,181.30/x
  3. Step 3: Cross multiply
    20,128,511.70x = 30,192,767.55 × 7,358,181.30
  4. Step 4: Simplify right side
    20,128,511.70x = 222,163,857,581,656.81
  5. Step 5: Solve for x
    x = 222,163,857,581,656.81/20,128,511.70
  6. Step 6: Final answer
    x = 11,037,271.95

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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.