Home / 21,511.26-29,688.99-12,558.73

Finding the Fourth Proportional to 21,511.26, 29,688.99 and 12,558.73

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Solution

The fourth proportional to 21,511.26, 29,688.99 and 12,558.73 is: 17,333.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,511.26 : 29,688.99 = 12,558.73 : x
  2. Step 2: Convert to fraction form
    21,511.26/29,688.99 = 12,558.73/x
  3. Step 3: Cross multiply
    21,511.26x = 29,688.99 × 12,558.73
  4. Step 4: Simplify right side
    21,511.26x = 372,856,009.38
  5. Step 5: Solve for x
    x = 372,856,009.38/21,511.26
  6. Step 6: Final answer
    x = 17,333.06

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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.