Home / 13,754.78-18,977.26-8,087.72

Finding the Fourth Proportional to 13,754.78, 18,977.26 and 8,087.72

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Solution

The fourth proportional to 13,754.78, 18,977.26 and 8,087.72 is: 11,158.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,754.78 : 18,977.26 = 8,087.72 : x
  2. Step 2: Convert to fraction form
    13,754.78/18,977.26 = 8,087.72/x
  3. Step 3: Cross multiply
    13,754.78x = 18,977.26 × 8,087.72
  4. Step 4: Simplify right side
    13,754.78x = 153,482,765.25
  5. Step 5: Solve for x
    x = 153,482,765.25/13,754.78
  6. Step 6: Final answer
    x = 11,158.50

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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.