Home / 21,110.74-29,128.35-12,610.60

Finding the Fourth Proportional to 21,110.74, 29,128.35 and 12,610.60

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Solution

The fourth proportional to 21,110.74, 29,128.35 and 12,610.60 is: 17,399.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.74 : 29,128.35 = 12,610.60 : x
  2. Step 2: Convert to fraction form
    21,110.74/29,128.35 = 12,610.60/x
  3. Step 3: Cross multiply
    21,110.74x = 29,128.35 × 12,610.60
  4. Step 4: Simplify right side
    21,110.74x = 367,325,970.51
  5. Step 5: Solve for x
    x = 367,325,970.51/21,110.74
  6. Step 6: Final answer
    x = 17,399.96

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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.