Home / 12,085.70-16,669.84-11,679.30

Finding the Fourth Proportional to 12,085.70, 16,669.84 and 11,679.30

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Solution

The fourth proportional to 12,085.70, 16,669.84 and 11,679.30 is: 16,109.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.70 : 16,669.84 = 11,679.30 : x
  2. Step 2: Convert to fraction form
    12,085.70/16,669.84 = 11,679.30/x
  3. Step 3: Cross multiply
    12,085.70x = 16,669.84 × 11,679.30
  4. Step 4: Simplify right side
    12,085.70x = 194,692,062.31
  5. Step 5: Solve for x
    x = 194,692,062.31/12,085.70
  6. Step 6: Final answer
    x = 16,109.29

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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.