Home / 21,459.42-29,606.76-13,915.44

Finding the Fourth Proportional to 21,459.42, 29,606.76 and 13,915.44

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Solution

The fourth proportional to 21,459.42, 29,606.76 and 13,915.44 is: 19,198.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,459.42 : 29,606.76 = 13,915.44 : x
  2. Step 2: Convert to fraction form
    21,459.42/29,606.76 = 13,915.44/x
  3. Step 3: Cross multiply
    21,459.42x = 29,606.76 × 13,915.44
  4. Step 4: Simplify right side
    21,459.42x = 411,991,092.37
  5. Step 5: Solve for x
    x = 411,991,092.37/21,459.42
  6. Step 6: Final answer
    x = 19,198.61

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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.