Home / 20,884.08-28,858.19-15,208.95

Finding the Fourth Proportional to 20,884.08, 28,858.19 and 15,208.95

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Solution

The fourth proportional to 20,884.08, 28,858.19 and 15,208.95 is: 21,016.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.08 : 28,858.19 = 15,208.95 : x
  2. Step 2: Convert to fraction form
    20,884.08/28,858.19 = 15,208.95/x
  3. Step 3: Cross multiply
    20,884.08x = 28,858.19 × 15,208.95
  4. Step 4: Simplify right side
    20,884.08x = 438,902,692.76
  5. Step 5: Solve for x
    x = 438,902,692.76/20,884.08
  6. Step 6: Final answer
    x = 21,016.14

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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.