Home / 13,426.02-18,524.93-8,120.72

Finding the Fourth Proportional to 13,426.02, 18,524.93 and 8,120.72

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Solution

The fourth proportional to 13,426.02, 18,524.93 and 8,120.72 is: 11,204.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.02 : 18,524.93 = 8,120.72 : x
  2. Step 2: Convert to fraction form
    13,426.02/18,524.93 = 8,120.72/x
  3. Step 3: Cross multiply
    13,426.02x = 18,524.93 × 8,120.72
  4. Step 4: Simplify right side
    13,426.02x = 150,435,775.26
  5. Step 5: Solve for x
    x = 150,435,775.26/13,426.02
  6. Step 6: Final answer
    x = 11,204.79

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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.