Home / 13,238.55-18,272.50-8,199.75

Finding the Fourth Proportional to 13,238.55, 18,272.50 and 8,199.75

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Solution

The fourth proportional to 13,238.55, 18,272.50 and 8,199.75 is: 11,317.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.55 : 18,272.50 = 8,199.75 : x
  2. Step 2: Convert to fraction form
    13,238.55/18,272.50 = 8,199.75/x
  3. Step 3: Cross multiply
    13,238.55x = 18,272.50 × 8,199.75
  4. Step 4: Simplify right side
    13,238.55x = 149,829,840.51
  5. Step 5: Solve for x
    x = 149,829,840.51/13,238.55
  6. Step 6: Final answer
    x = 11,317.70

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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.