Home / 28,221.08-42,322.98-19,511.96

Finding the Fourth Proportional to 28,221.08, 42,322.98 and 19,511.96

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Solution

The fourth proportional to 28,221.08, 42,322.98 and 19,511.96 is: 29,261.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.08 : 42,322.98 = 19,511.96 : x
  2. Step 2: Convert to fraction form
    28,221.08/42,322.98 = 19,511.96/x
  3. Step 3: Cross multiply
    28,221.08x = 42,322.98 × 19,511.96
  4. Step 4: Simplify right side
    28,221.08x = 825,804,292.84
  5. Step 5: Solve for x
    x = 825,804,292.84/28,221.08
  6. Step 6: Final answer
    x = 29,261.97

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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.