Home / 18,812.80-28,219.44-12,967.84

Finding the Fourth Proportional to 18,812.80, 28,219.44 and 12,967.84

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Solution

The fourth proportional to 18,812.80, 28,219.44 and 12,967.84 is: 19,451.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,812.80 : 28,219.44 = 12,967.84 : x
  2. Step 2: Convert to fraction form
    18,812.80/28,219.44 = 12,967.84/x
  3. Step 3: Cross multiply
    18,812.80x = 28,219.44 × 12,967.84
  4. Step 4: Simplify right side
    18,812.80x = 365,945,182.81
  5. Step 5: Solve for x
    x = 365,945,182.81/18,812.80
  6. Step 6: Final answer
    x = 19,451.93

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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.