Home / 28,577.21-39,436.87-15,830.59

Finding the Fourth Proportional to 28,577.21, 39,436.87 and 15,830.59

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Solution

The fourth proportional to 28,577.21, 39,436.87 and 15,830.59 is: 21,846.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,577.21 : 39,436.87 = 15,830.59 : x
  2. Step 2: Convert to fraction form
    28,577.21/39,436.87 = 15,830.59/x
  3. Step 3: Cross multiply
    28,577.21x = 39,436.87 × 15,830.59
  4. Step 4: Simplify right side
    28,577.21x = 624,308,919.85
  5. Step 5: Solve for x
    x = 624,308,919.85/28,577.21
  6. Step 6: Final answer
    x = 21,846.39

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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.