Home / 21,070.18-29,075.37-11,638

Finding the Fourth Proportional to 21,070.18, 29,075.37 and 11,638

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Solution

The fourth proportional to 21,070.18, 29,075.37 and 11,638 is: 16,059.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.18 : 29,075.37 = 11,638 : x
  2. Step 2: Convert to fraction form
    21,070.18/29,075.37 = 11,638/x
  3. Step 3: Cross multiply
    21,070.18x = 29,075.37 × 11,638
  4. Step 4: Simplify right side
    21,070.18x = 338,379,156.06
  5. Step 5: Solve for x
    x = 338,379,156.06/21,070.18
  6. Step 6: Final answer
    x = 16,059.62

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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.