Home / 21,136.43-29,167.49-12,184.31

Finding the Fourth Proportional to 21,136.43, 29,167.49 and 12,184.31

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Solution

The fourth proportional to 21,136.43, 29,167.49 and 12,184.31 is: 16,813.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.43 : 29,167.49 = 12,184.31 : x
  2. Step 2: Convert to fraction form
    21,136.43/29,167.49 = 12,184.31/x
  3. Step 3: Cross multiply
    21,136.43x = 29,167.49 × 12,184.31
  4. Step 4: Simplify right side
    21,136.43x = 355,385,533.32
  5. Step 5: Solve for x
    x = 355,385,533.32/21,136.43
  6. Step 6: Final answer
    x = 16,813.89

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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.