Home / 21,261.12-29,341.80-11,829.84

Finding the Fourth Proportional to 21,261.12, 29,341.80 and 11,829.84

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Solution

The fourth proportional to 21,261.12, 29,341.80 and 11,829.84 is: 16,325.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.12 : 29,341.80 = 11,829.84 : x
  2. Step 2: Convert to fraction form
    21,261.12/29,341.80 = 11,829.84/x
  3. Step 3: Cross multiply
    21,261.12x = 29,341.80 × 11,829.84
  4. Step 4: Simplify right side
    21,261.12x = 347,108,799.31
  5. Step 5: Solve for x
    x = 347,108,799.31/21,261.12
  6. Step 6: Final answer
    x = 16,325.99

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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.