Home / 20,690.94-28,552.95-11,259.30

Finding the Fourth Proportional to 20,690.94, 28,552.95 and 11,259.30

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Solution

The fourth proportional to 20,690.94, 28,552.95 and 11,259.30 is: 15,537.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.94 : 28,552.95 = 11,259.30 : x
  2. Step 2: Convert to fraction form
    20,690.94/28,552.95 = 11,259.30/x
  3. Step 3: Cross multiply
    20,690.94x = 28,552.95 × 11,259.30
  4. Step 4: Simplify right side
    20,690.94x = 321,486,229.94
  5. Step 5: Solve for x
    x = 321,486,229.94/20,690.94
  6. Step 6: Final answer
    x = 15,537.54

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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.