Home / 13,821.56-19,073.74-8,156.32

Finding the Fourth Proportional to 13,821.56, 19,073.74 and 8,156.32

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Solution

The fourth proportional to 13,821.56, 19,073.74 and 8,156.32 is: 11,255.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.56 : 19,073.74 = 8,156.32 : x
  2. Step 2: Convert to fraction form
    13,821.56/19,073.74 = 8,156.32/x
  3. Step 3: Cross multiply
    13,821.56x = 19,073.74 × 8,156.32
  4. Step 4: Simplify right side
    13,821.56x = 155,571,458.96
  5. Step 5: Solve for x
    x = 155,571,458.96/13,821.56
  6. Step 6: Final answer
    x = 11,255.71

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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.