Home / 21,136.56-29,168.39-12,184.01

Finding the Fourth Proportional to 21,136.56, 29,168.39 and 12,184.01

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Solution

The fourth proportional to 21,136.56, 29,168.39 and 12,184.01 is: 16,813.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.56 : 29,168.39 = 12,184.01 : x
  2. Step 2: Convert to fraction form
    21,136.56/29,168.39 = 12,184.01/x
  3. Step 3: Cross multiply
    21,136.56x = 29,168.39 × 12,184.01
  4. Step 4: Simplify right side
    21,136.56x = 355,387,955.44
  5. Step 5: Solve for x
    x = 355,387,955.44/21,136.56
  6. Step 6: Final answer
    x = 16,813.90

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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.