Home / 12,085.60-16,679.37-6,780.45

Finding the Fourth Proportional to 12,085.60, 16,679.37 and 6,780.45

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Solution

The fourth proportional to 12,085.60, 16,679.37 and 6,780.45 is: 9,357.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.60 : 16,679.37 = 6,780.45 : x
  2. Step 2: Convert to fraction form
    12,085.60/16,679.37 = 6,780.45/x
  3. Step 3: Cross multiply
    12,085.60x = 16,679.37 × 6,780.45
  4. Step 4: Simplify right side
    12,085.60x = 113,093,634.32
  5. Step 5: Solve for x
    x = 113,093,634.32/12,085.60
  6. Step 6: Final answer
    x = 9,357.72

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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.