Home / 28,120.19-42,194.03-12,323.05

Finding the Fourth Proportional to 28,120.19, 42,194.03 and 12,323.05

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Solution

The fourth proportional to 28,120.19, 42,194.03 and 12,323.05 is: 18,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.19 : 42,194.03 = 12,323.05 : x
  2. Step 2: Convert to fraction form
    28,120.19/42,194.03 = 12,323.05/x
  3. Step 3: Cross multiply
    28,120.19x = 42,194.03 × 12,323.05
  4. Step 4: Simplify right side
    28,120.19x = 519,958,974.29
  5. Step 5: Solve for x
    x = 519,958,974.29/28,120.19
  6. Step 6: Final answer
    x = 18,490.60

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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.