Home / 20,525.31-30,813.48-20,430.54

Finding the Fourth Proportional to 20,525.31, 30,813.48 and 20,430.54

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Solution

The fourth proportional to 20,525.31, 30,813.48 and 20,430.54 is: 30,671.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,525.31 : 30,813.48 = 20,430.54 : x
  2. Step 2: Convert to fraction form
    20,525.31/30,813.48 = 20,430.54/x
  3. Step 3: Cross multiply
    20,525.31x = 30,813.48 × 20,430.54
  4. Step 4: Simplify right side
    20,525.31x = 629,536,035.68
  5. Step 5: Solve for x
    x = 629,536,035.68/20,525.31
  6. Step 6: Final answer
    x = 30,671.21

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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.