Home / 21,017.36-28,998.80-13,846.48

Finding the Fourth Proportional to 21,017.36, 28,998.80 and 13,846.48

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Solution

The fourth proportional to 21,017.36, 28,998.80 and 13,846.48 is: 19,104.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.36 : 28,998.80 = 13,846.48 : x
  2. Step 2: Convert to fraction form
    21,017.36/28,998.80 = 13,846.48/x
  3. Step 3: Cross multiply
    21,017.36x = 28,998.80 × 13,846.48
  4. Step 4: Simplify right side
    21,017.36x = 401,531,304.22
  5. Step 5: Solve for x
    x = 401,531,304.22/21,017.36
  6. Step 6: Final answer
    x = 19,104.75

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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.