Home / 21,317.36-29,415.48-11,885.60

Finding the Fourth Proportional to 21,317.36, 29,415.48 and 11,885.60

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Solution

The fourth proportional to 21,317.36, 29,415.48 and 11,885.60 is: 16,400.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.36 : 29,415.48 = 11,885.60 : x
  2. Step 2: Convert to fraction form
    21,317.36/29,415.48 = 11,885.60/x
  3. Step 3: Cross multiply
    21,317.36x = 29,415.48 × 11,885.60
  4. Step 4: Simplify right side
    21,317.36x = 349,620,629.09
  5. Step 5: Solve for x
    x = 349,620,629.09/21,317.36
  6. Step 6: Final answer
    x = 16,400.75

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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.