Home / 21,069-29,075.33-12,117.03

Finding the Fourth Proportional to 21,069, 29,075.33 and 12,117.03

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Solution

The fourth proportional to 21,069, 29,075.33 and 12,117.03 is: 16,721.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069 : 29,075.33 = 12,117.03 : x
  2. Step 2: Convert to fraction form
    21,069/29,075.33 = 12,117.03/x
  3. Step 3: Cross multiply
    21,069x = 29,075.33 × 12,117.03
  4. Step 4: Simplify right side
    21,069x = 352,306,585.28
  5. Step 5: Solve for x
    x = 352,306,585.28/21,069
  6. Step 6: Final answer
    x = 16,721.56

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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.