Home / 13,629.50-18,810.72-8,327.36

Finding the Fourth Proportional to 13,629.50, 18,810.72 and 8,327.36

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Solution

The fourth proportional to 13,629.50, 18,810.72 and 8,327.36 is: 11,492.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.50 : 18,810.72 = 8,327.36 : x
  2. Step 2: Convert to fraction form
    13,629.50/18,810.72 = 8,327.36/x
  3. Step 3: Cross multiply
    13,629.50x = 18,810.72 × 8,327.36
  4. Step 4: Simplify right side
    13,629.50x = 156,643,637.30
  5. Step 5: Solve for x
    x = 156,643,637.30/13,629.50
  6. Step 6: Final answer
    x = 11,492.98

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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.