Home / 21,075.48-29,083.77-11,643.84

Finding the Fourth Proportional to 21,075.48, 29,083.77 and 11,643.84

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Solution

The fourth proportional to 21,075.48, 29,083.77 and 11,643.84 is: 16,068.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.48 : 29,083.77 = 11,643.84 : x
  2. Step 2: Convert to fraction form
    21,075.48/29,083.77 = 11,643.84/x
  3. Step 3: Cross multiply
    21,075.48x = 29,083.77 × 11,643.84
  4. Step 4: Simplify right side
    21,075.48x = 338,646,764.48
  5. Step 5: Solve for x
    x = 338,646,764.48/21,075.48
  6. Step 6: Final answer
    x = 16,068.28

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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.