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Finding the Fourth Proportional to 17,927.31, 26,861.07 and 12,653.68

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Solution

The fourth proportional to 17,927.31, 26,861.07 and 12,653.68 is: 18,959.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,927.31 : 26,861.07 = 12,653.68 : x
  2. Step 2: Convert to fraction form
    17,927.31/26,861.07 = 12,653.68/x
  3. Step 3: Cross multiply
    17,927.31x = 26,861.07 × 12,653.68
  4. Step 4: Simplify right side
    17,927.31x = 339,891,384.24
  5. Step 5: Solve for x
    x = 339,891,384.24/17,927.31
  6. Step 6: Final answer
    x = 18,959.42

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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.