Home / 20,558.57-30,657.33-20,371.46

Finding the Fourth Proportional to 20,558.57, 30,657.33 and 20,371.46

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Solution

The fourth proportional to 20,558.57, 30,657.33 and 20,371.46 is: 30,378.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.57 : 30,657.33 = 20,371.46 : x
  2. Step 2: Convert to fraction form
    20,558.57/30,657.33 = 20,371.46/x
  3. Step 3: Cross multiply
    20,558.57x = 30,657.33 × 20,371.46
  4. Step 4: Simplify right side
    20,558.57x = 624,534,418.52
  5. Step 5: Solve for x
    x = 624,534,418.52/20,558.57
  6. Step 6: Final answer
    x = 30,378.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.