Home / 19,136.61-28,680.57-10,821.24

Finding the Fourth Proportional to 19,136.61, 28,680.57 and 10,821.24

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Solution

The fourth proportional to 19,136.61, 28,680.57 and 10,821.24 is: 16,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,136.61 : 28,680.57 = 10,821.24 : x
  2. Step 2: Convert to fraction form
    19,136.61/28,680.57 = 10,821.24/x
  3. Step 3: Cross multiply
    19,136.61x = 28,680.57 × 10,821.24
  4. Step 4: Simplify right side
    19,136.61x = 310,359,331.31
  5. Step 5: Solve for x
    x = 310,359,331.31/19,136.61
  6. Step 6: Final answer
    x = 16,218.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.