Home / 21,719.48-29,972.94-11,783.48

Finding the Fourth Proportional to 21,719.48, 29,972.94 and 11,783.48

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Solution

The fourth proportional to 21,719.48, 29,972.94 and 11,783.48 is: 16,261.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719.48 : 29,972.94 = 11,783.48 : x
  2. Step 2: Convert to fraction form
    21,719.48/29,972.94 = 11,783.48/x
  3. Step 3: Cross multiply
    21,719.48x = 29,972.94 × 11,783.48
  4. Step 4: Simplify right side
    21,719.48x = 353,185,539.03
  5. Step 5: Solve for x
    x = 353,185,539.03/21,719.48
  6. Step 6: Final answer
    x = 16,261.23

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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.