Home / 20,692.48-28,543.44-13,616.32

Finding the Fourth Proportional to 20,692.48, 28,543.44 and 13,616.32

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Solution

The fourth proportional to 20,692.48, 28,543.44 and 13,616.32 is: 18,782.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.48 : 28,543.44 = 13,616.32 : x
  2. Step 2: Convert to fraction form
    20,692.48/28,543.44 = 13,616.32/x
  3. Step 3: Cross multiply
    20,692.48x = 28,543.44 × 13,616.32
  4. Step 4: Simplify right side
    20,692.48x = 388,656,612.94
  5. Step 5: Solve for x
    x = 388,656,612.94/20,692.48
  6. Step 6: Final answer
    x = 18,782.51

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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.