Home / 57,021.78-85,542.94-19,572.18

Finding the Fourth Proportional to 57,021.78, 85,542.94 and 19,572.18

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Solution

The fourth proportional to 57,021.78, 85,542.94 and 19,572.18 is: 29,361.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,021.78 : 85,542.94 = 19,572.18 : x
  2. Step 2: Convert to fraction form
    57,021.78/85,542.94 = 19,572.18/x
  3. Step 3: Cross multiply
    57,021.78x = 85,542.94 × 19,572.18
  4. Step 4: Simplify right side
    57,021.78x = 1,674,261,819.41
  5. Step 5: Solve for x
    x = 1,674,261,819.41/57,021.78
  6. Step 6: Final answer
    x = 29,361.80

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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.