Home / 20,485.36-30,726.60-11,692.72

Finding the Fourth Proportional to 20,485.36, 30,726.60 and 11,692.72

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Solution

The fourth proportional to 20,485.36, 30,726.60 and 11,692.72 is: 17,538.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.36 : 30,726.60 = 11,692.72 : x
  2. Step 2: Convert to fraction form
    20,485.36/30,726.60 = 11,692.72/x
  3. Step 3: Cross multiply
    20,485.36x = 30,726.60 × 11,692.72
  4. Step 4: Simplify right side
    20,485.36x = 359,277,530.35
  5. Step 5: Solve for x
    x = 359,277,530.35/20,485.36
  6. Step 6: Final answer
    x = 17,538.26

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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.