Home / 20,503.73-30,755.57-15,830.55

Finding the Fourth Proportional to 20,503.73, 30,755.57 and 15,830.55

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Solution

The fourth proportional to 20,503.73, 30,755.57 and 15,830.55 is: 23,745.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.73 : 30,755.57 = 15,830.55 : x
  2. Step 2: Convert to fraction form
    20,503.73/30,755.57 = 15,830.55/x
  3. Step 3: Cross multiply
    20,503.73x = 30,755.57 × 15,830.55
  4. Step 4: Simplify right side
    20,503.73x = 486,877,509.51
  5. Step 5: Solve for x
    x = 486,877,509.51/20,503.73
  6. Step 6: Final answer
    x = 23,745.81

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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.