Home / 21,075.90-29,086.65-11,647.50

Finding the Fourth Proportional to 21,075.90, 29,086.65 and 11,647.50

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Solution

The fourth proportional to 21,075.90, 29,086.65 and 11,647.50 is: 16,074.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.90 : 29,086.65 = 11,647.50 : x
  2. Step 2: Convert to fraction form
    21,075.90/29,086.65 = 11,647.50/x
  3. Step 3: Cross multiply
    21,075.90x = 29,086.65 × 11,647.50
  4. Step 4: Simplify right side
    21,075.90x = 338,786,755.88
  5. Step 5: Solve for x
    x = 338,786,755.88/21,075.90
  6. Step 6: Final answer
    x = 16,074.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.