Home / 13,722.55-18,936.96-8,056.30

Finding the Fourth Proportional to 13,722.55, 18,936.96 and 8,056.30

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Solution

The fourth proportional to 13,722.55, 18,936.96 and 8,056.30 is: 11,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.55 : 18,936.96 = 8,056.30 : x
  2. Step 2: Convert to fraction form
    13,722.55/18,936.96 = 8,056.30/x
  3. Step 3: Cross multiply
    13,722.55x = 18,936.96 × 8,056.30
  4. Step 4: Simplify right side
    13,722.55x = 152,561,830.85
  5. Step 5: Solve for x
    x = 152,561,830.85/13,722.55
  6. Step 6: Final answer
    x = 11,117.60

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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.