Home / 22,570.20-31,136.94-13,618.08

Finding the Fourth Proportional to 22,570.20, 31,136.94 and 13,618.08

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Solution

The fourth proportional to 22,570.20, 31,136.94 and 13,618.08 is: 18,786.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,570.20 : 31,136.94 = 13,618.08 : x
  2. Step 2: Convert to fraction form
    22,570.20/31,136.94 = 13,618.08/x
  3. Step 3: Cross multiply
    22,570.20x = 31,136.94 × 13,618.08
  4. Step 4: Simplify right side
    22,570.20x = 424,025,339.88
  5. Step 5: Solve for x
    x = 424,025,339.88/22,570.20
  6. Step 6: Final answer
    x = 18,786.96

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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.