Home / 28,486.53-42,692.61-20,615.55

Finding the Fourth Proportional to 28,486.53, 42,692.61 and 20,615.55

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Solution

The fourth proportional to 28,486.53, 42,692.61 and 20,615.55 is: 30,896.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,486.53 : 42,692.61 = 20,615.55 : x
  2. Step 2: Convert to fraction form
    28,486.53/42,692.61 = 20,615.55/x
  3. Step 3: Cross multiply
    28,486.53x = 42,692.61 × 20,615.55
  4. Step 4: Simplify right side
    28,486.53x = 880,131,636.09
  5. Step 5: Solve for x
    x = 880,131,636.09/28,486.53
  6. Step 6: Final answer
    x = 30,896.41

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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.