Home / 20,503.73-28,295.37-12,003.99

Finding the Fourth Proportional to 20,503.73, 28,295.37 and 12,003.99

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Solution

The fourth proportional to 20,503.73, 28,295.37 and 12,003.99 is: 16,565.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.73 : 28,295.37 = 12,003.99 : x
  2. Step 2: Convert to fraction form
    20,503.73/28,295.37 = 12,003.99/x
  3. Step 3: Cross multiply
    20,503.73x = 28,295.37 × 12,003.99
  4. Step 4: Simplify right side
    20,503.73x = 339,657,338.53
  5. Step 5: Solve for x
    x = 339,657,338.53/20,503.73
  6. Step 6: Final answer
    x = 16,565.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.