Home / 28,140.23-42,194.75-11,511.93

Finding the Fourth Proportional to 28,140.23, 42,194.75 and 11,511.93

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Solution

The fourth proportional to 28,140.23, 42,194.75 and 11,511.93 is: 17,261.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.23 : 42,194.75 = 11,511.93 : x
  2. Step 2: Convert to fraction form
    28,140.23/42,194.75 = 11,511.93/x
  3. Step 3: Cross multiply
    28,140.23x = 42,194.75 × 11,511.93
  4. Step 4: Simplify right side
    28,140.23x = 485,743,037.15
  5. Step 5: Solve for x
    x = 485,743,037.15/28,140.23
  6. Step 6: Final answer
    x = 17,261.52

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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.