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Finding the Fourth Proportional to 14,136.30, 21,214.98 and 5,388.30

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Solution

The fourth proportional to 14,136.30, 21,214.98 and 5,388.30 is: 8,086.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,136.30 : 21,214.98 = 5,388.30 : x
  2. Step 2: Convert to fraction form
    14,136.30/21,214.98 = 5,388.30/x
  3. Step 3: Cross multiply
    14,136.30x = 21,214.98 × 5,388.30
  4. Step 4: Simplify right side
    14,136.30x = 114,312,676.73
  5. Step 5: Solve for x
    x = 114,312,676.73/14,136.30
  6. Step 6: Final answer
    x = 8,086.46

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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.