Home / 13,937.56-19,242.84-8,638

Finding the Fourth Proportional to 13,937.56, 19,242.84 and 8,638

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Solution

The fourth proportional to 13,937.56, 19,242.84 and 8,638 is: 11,926.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,937.56 : 19,242.84 = 8,638 : x
  2. Step 2: Convert to fraction form
    13,937.56/19,242.84 = 8,638/x
  3. Step 3: Cross multiply
    13,937.56x = 19,242.84 × 8,638
  4. Step 4: Simplify right side
    13,937.56x = 166,219,651.92
  5. Step 5: Solve for x
    x = 166,219,651.92/13,937.56
  6. Step 6: Final answer
    x = 11,926.02

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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.