Home / 21,736.14-29,996.09-12,302.88

Finding the Fourth Proportional to 21,736.14, 29,996.09 and 12,302.88

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Solution

The fourth proportional to 21,736.14, 29,996.09 and 12,302.88 is: 16,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,736.14 : 29,996.09 = 12,302.88 : x
  2. Step 2: Convert to fraction form
    21,736.14/29,996.09 = 12,302.88/x
  3. Step 3: Cross multiply
    21,736.14x = 29,996.09 × 12,302.88
  4. Step 4: Simplify right side
    21,736.14x = 369,038,295.74
  5. Step 5: Solve for x
    x = 369,038,295.74/21,736.14
  6. Step 6: Final answer
    x = 16,978.10

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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.