Home / 21,028.34-29,017.79-12,069.54

Finding the Fourth Proportional to 21,028.34, 29,017.79 and 12,069.54

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Solution

The fourth proportional to 21,028.34, 29,017.79 and 12,069.54 is: 16,655.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028.34 : 29,017.79 = 12,069.54 : x
  2. Step 2: Convert to fraction form
    21,028.34/29,017.79 = 12,069.54/x
  3. Step 3: Cross multiply
    21,028.34x = 29,017.79 × 12,069.54
  4. Step 4: Simplify right side
    21,028.34x = 350,231,362.03
  5. Step 5: Solve for x
    x = 350,231,362.03/21,028.34
  6. Step 6: Final answer
    x = 16,655.21

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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.