Home / 28,252.47-38,993.75-18,692.85

Finding the Fourth Proportional to 28,252.47, 38,993.75 and 18,692.85

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Solution

The fourth proportional to 28,252.47, 38,993.75 and 18,692.85 is: 25,799.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.47 : 38,993.75 = 18,692.85 : x
  2. Step 2: Convert to fraction form
    28,252.47/38,993.75 = 18,692.85/x
  3. Step 3: Cross multiply
    28,252.47x = 38,993.75 × 18,692.85
  4. Step 4: Simplify right side
    28,252.47x = 728,904,319.69
  5. Step 5: Solve for x
    x = 728,904,319.69/28,252.47
  6. Step 6: Final answer
    x = 25,799.67

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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.