Home / 12,723.80-19,085.70-8,343.80

Finding the Fourth Proportional to 12,723.80, 19,085.70 and 8,343.80

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Solution

The fourth proportional to 12,723.80, 19,085.70 and 8,343.80 is: 12,515.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,723.80 : 19,085.70 = 8,343.80 : x
  2. Step 2: Convert to fraction form
    12,723.80/19,085.70 = 8,343.80/x
  3. Step 3: Cross multiply
    12,723.80x = 19,085.70 × 8,343.80
  4. Step 4: Simplify right side
    12,723.80x = 159,247,263.66
  5. Step 5: Solve for x
    x = 159,247,263.66/12,723.80
  6. Step 6: Final answer
    x = 12,515.70

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.