Home / 21,551.40-29,739.96-13,053.42

Finding the Fourth Proportional to 21,551.40, 29,739.96 and 13,053.42

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Solution

The fourth proportional to 21,551.40, 29,739.96 and 13,053.42 is: 18,013.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.40 : 29,739.96 = 13,053.42 : x
  2. Step 2: Convert to fraction form
    21,551.40/29,739.96 = 13,053.42/x
  3. Step 3: Cross multiply
    21,551.40x = 29,739.96 × 13,053.42
  4. Step 4: Simplify right side
    21,551.40x = 388,208,188.66
  5. Step 5: Solve for x
    x = 388,208,188.66/21,551.40
  6. Step 6: Final answer
    x = 18,013.13

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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.