Home / 28,119.94-42,200.78-13,328.89

Finding the Fourth Proportional to 28,119.94, 42,200.78 and 13,328.89

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Solution

The fourth proportional to 28,119.94, 42,200.78 and 13,328.89 is: 20,003.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.94 : 42,200.78 = 13,328.89 : x
  2. Step 2: Convert to fraction form
    28,119.94/42,200.78 = 13,328.89/x
  3. Step 3: Cross multiply
    28,119.94x = 42,200.78 × 13,328.89
  4. Step 4: Simplify right side
    28,119.94x = 562,489,382.39
  5. Step 5: Solve for x
    x = 562,489,382.39/28,119.94
  6. Step 6: Final answer
    x = 20,003.22

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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.