Home / 21,115.20-29,136.99-14,295.35

Finding the Fourth Proportional to 21,115.20, 29,136.99 and 14,295.35

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Solution

The fourth proportional to 21,115.20, 29,136.99 and 14,295.35 is: 19,726.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,115.20 : 29,136.99 = 14,295.35 : x
  2. Step 2: Convert to fraction form
    21,115.20/29,136.99 = 14,295.35/x
  3. Step 3: Cross multiply
    21,115.20x = 29,136.99 × 14,295.35
  4. Step 4: Simplify right side
    21,115.20x = 416,523,270.70
  5. Step 5: Solve for x
    x = 416,523,270.70/21,115.20
  6. Step 6: Final answer
    x = 19,726.23

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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.