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Finding the Fourth Proportional to 17,929.65, 26,889.90 and 12,713.65

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Solution

The fourth proportional to 17,929.65, 26,889.90 and 12,713.65 is: 19,067.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,929.65 : 26,889.90 = 12,713.65 : x
  2. Step 2: Convert to fraction form
    17,929.65/26,889.90 = 12,713.65/x
  3. Step 3: Cross multiply
    17,929.65x = 26,889.90 × 12,713.65
  4. Step 4: Simplify right side
    17,929.65x = 341,868,777.14
  5. Step 5: Solve for x
    x = 341,868,777.14/17,929.65
  6. Step 6: Final answer
    x = 19,067.23

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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.