Home / 18,217.95-25,136.31-12,156.27

Finding the Fourth Proportional to 18,217.95, 25,136.31 and 12,156.27

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Solution

The fourth proportional to 18,217.95, 25,136.31 and 12,156.27 is: 16,772.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.95 : 25,136.31 = 12,156.27 : x
  2. Step 2: Convert to fraction form
    18,217.95/25,136.31 = 12,156.27/x
  3. Step 3: Cross multiply
    18,217.95x = 25,136.31 × 12,156.27
  4. Step 4: Simplify right side
    18,217.95x = 305,563,771.16
  5. Step 5: Solve for x
    x = 305,563,771.16/18,217.95
  6. Step 6: Final answer
    x = 16,772.68

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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.