Home / 21,640.98-29,866.06-12,082.75

Finding the Fourth Proportional to 21,640.98, 29,866.06 and 12,082.75

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Solution

The fourth proportional to 21,640.98, 29,866.06 and 12,082.75 is: 16,675.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,640.98 : 29,866.06 = 12,082.75 : x
  2. Step 2: Convert to fraction form
    21,640.98/29,866.06 = 12,082.75/x
  3. Step 3: Cross multiply
    21,640.98x = 29,866.06 × 12,082.75
  4. Step 4: Simplify right side
    21,640.98x = 360,864,031.59
  5. Step 5: Solve for x
    x = 360,864,031.59/21,640.98
  6. Step 6: Final answer
    x = 16,675.03

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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.