Home / 20,213,219.80-30,321,141.90-10,647,281.80

Finding the Fourth Proportional to 20,213,219.80, 30,321,141.90 and 10,647,281.80

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Solution

The fourth proportional to 20,213,219.80, 30,321,141.90 and 10,647,281.80 is: 15,971,613.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213,219.80 : 30,321,141.90 = 10,647,281.80 : x
  2. Step 2: Convert to fraction form
    20,213,219.80/30,321,141.90 = 10,647,281.80/x
  3. Step 3: Cross multiply
    20,213,219.80x = 30,321,141.90 × 10,647,281.80
  4. Step 4: Simplify right side
    20,213,219.80x = 322,837,742,307,087.44
  5. Step 5: Solve for x
    x = 322,837,742,307,087.44/20,213,219.80
  6. Step 6: Final answer
    x = 15,971,613.90

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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.