Home / 28,198.98-42,209.19-19,840.26

Finding the Fourth Proportional to 28,198.98, 42,209.19 and 19,840.26

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Solution

The fourth proportional to 28,198.98, 42,209.19 and 19,840.26 is: 29,697.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.98 : 42,209.19 = 19,840.26 : x
  2. Step 2: Convert to fraction form
    28,198.98/42,209.19 = 19,840.26/x
  3. Step 3: Cross multiply
    28,198.98x = 42,209.19 × 19,840.26
  4. Step 4: Simplify right side
    28,198.98x = 837,441,303.99
  5. Step 5: Solve for x
    x = 837,441,303.99/28,198.98
  6. Step 6: Final answer
    x = 29,697.57

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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.