Home / 28,173.41-38,879.81-15,426.62

Finding the Fourth Proportional to 28,173.41, 38,879.81 and 15,426.62

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Solution

The fourth proportional to 28,173.41, 38,879.81 and 15,426.62 is: 21,289.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173.41 : 38,879.81 = 15,426.62 : x
  2. Step 2: Convert to fraction form
    28,173.41/38,879.81 = 15,426.62/x
  3. Step 3: Cross multiply
    28,173.41x = 38,879.81 × 15,426.62
  4. Step 4: Simplify right side
    28,173.41x = 599,783,783.01
  5. Step 5: Solve for x
    x = 599,783,783.01/28,173.41
  6. Step 6: Final answer
    x = 21,289.01

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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.