Home / 21,719.81-29,973.34-11,783.81

Finding the Fourth Proportional to 21,719.81, 29,973.34 and 11,783.81

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Solution

The fourth proportional to 21,719.81, 29,973.34 and 11,783.81 is: 16,261.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719.81 : 29,973.34 = 11,783.81 : x
  2. Step 2: Convert to fraction form
    21,719.81/29,973.34 = 11,783.81/x
  3. Step 3: Cross multiply
    21,719.81x = 29,973.34 × 11,783.81
  4. Step 4: Simplify right side
    21,719.81x = 353,200,233.29
  5. Step 5: Solve for x
    x = 353,200,233.29/21,719.81
  6. Step 6: Final answer
    x = 16,261.66

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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.