Home / 21,123.54-29,150.91-11,692.26

Finding the Fourth Proportional to 21,123.54, 29,150.91 and 11,692.26

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Solution

The fourth proportional to 21,123.54, 29,150.91 and 11,692.26 is: 16,135.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123.54 : 29,150.91 = 11,692.26 : x
  2. Step 2: Convert to fraction form
    21,123.54/29,150.91 = 11,692.26/x
  3. Step 3: Cross multiply
    21,123.54x = 29,150.91 × 11,692.26
  4. Step 4: Simplify right side
    21,123.54x = 340,840,018.96
  5. Step 5: Solve for x
    x = 340,840,018.96/21,123.54
  6. Step 6: Final answer
    x = 16,135.55

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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.