Home / 20,533.67-30,858.21-12,215.19

Finding the Fourth Proportional to 20,533.67, 30,858.21 and 12,215.19

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Solution

The fourth proportional to 20,533.67, 30,858.21 and 12,215.19 is: 18,357.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.67 : 30,858.21 = 12,215.19 : x
  2. Step 2: Convert to fraction form
    20,533.67/30,858.21 = 12,215.19/x
  3. Step 3: Cross multiply
    20,533.67x = 30,858.21 × 12,215.19
  4. Step 4: Simplify right side
    20,533.67x = 376,938,898.21
  5. Step 5: Solve for x
    x = 376,938,898.21/20,533.67
  6. Step 6: Final answer
    x = 18,357.12

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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.