Home / 21,385.40-29,511.44-11,825.63

Finding the Fourth Proportional to 21,385.40, 29,511.44 and 11,825.63

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Solution

The fourth proportional to 21,385.40, 29,511.44 and 11,825.63 is: 16,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.40 : 29,511.44 = 11,825.63 : x
  2. Step 2: Convert to fraction form
    21,385.40/29,511.44 = 11,825.63/x
  3. Step 3: Cross multiply
    21,385.40x = 29,511.44 × 11,825.63
  4. Step 4: Simplify right side
    21,385.40x = 348,991,163.52
  5. Step 5: Solve for x
    x = 348,991,163.52/21,385.40
  6. Step 6: Final answer
    x = 16,319.13

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.