Home / 15,285.41-21,093.78-8,571.03

Finding the Fourth Proportional to 15,285.41, 21,093.78 and 8,571.03

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Solution

The fourth proportional to 15,285.41, 21,093.78 and 8,571.03 is: 11,827.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.41 : 21,093.78 = 8,571.03 : x
  2. Step 2: Convert to fraction form
    15,285.41/21,093.78 = 8,571.03/x
  3. Step 3: Cross multiply
    15,285.41x = 21,093.78 × 8,571.03
  4. Step 4: Simplify right side
    15,285.41x = 180,795,421.19
  5. Step 5: Solve for x
    x = 180,795,421.19/15,285.41
  6. Step 6: Final answer
    x = 11,827.97

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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.