Home / 18,520.22-25,558.26-10,136.72

Finding the Fourth Proportional to 18,520.22, 25,558.26 and 10,136.72

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Solution

The fourth proportional to 18,520.22, 25,558.26 and 10,136.72 is: 13,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.22 : 25,558.26 = 10,136.72 : x
  2. Step 2: Convert to fraction form
    18,520.22/25,558.26 = 10,136.72/x
  3. Step 3: Cross multiply
    18,520.22x = 25,558.26 × 10,136.72
  4. Step 4: Simplify right side
    18,520.22x = 259,076,925.31
  5. Step 5: Solve for x
    x = 259,076,925.31/18,520.22
  6. Step 6: Final answer
    x = 13,988.87

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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.