Home / 21,478.36-29,634.06-13,925

Finding the Fourth Proportional to 21,478.36, 29,634.06 and 13,925

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Solution

The fourth proportional to 21,478.36, 29,634.06 and 13,925 is: 19,212.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.36 : 29,634.06 = 13,925 : x
  2. Step 2: Convert to fraction form
    21,478.36/29,634.06 = 13,925/x
  3. Step 3: Cross multiply
    21,478.36x = 29,634.06 × 13,925
  4. Step 4: Simplify right side
    21,478.36x = 412,654,285.50
  5. Step 5: Solve for x
    x = 412,654,285.50/21,478.36
  6. Step 6: Final answer
    x = 19,212.56

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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.