Home / 15,219.67-21,004.26-8,761.27

Finding the Fourth Proportional to 15,219.67, 21,004.26 and 8,761.27

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Solution

The fourth proportional to 15,219.67, 21,004.26 and 8,761.27 is: 12,091.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.67 : 21,004.26 = 8,761.27 : x
  2. Step 2: Convert to fraction form
    15,219.67/21,004.26 = 8,761.27/x
  3. Step 3: Cross multiply
    15,219.67x = 21,004.26 × 8,761.27
  4. Step 4: Simplify right side
    15,219.67x = 184,023,993.01
  5. Step 5: Solve for x
    x = 184,023,993.01/15,219.67
  6. Step 6: Final answer
    x = 12,091.19

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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.