Home / 12,690.45-17,514.61-7,386.97

Finding the Fourth Proportional to 12,690.45, 17,514.61 and 7,386.97

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Solution

The fourth proportional to 12,690.45, 17,514.61 and 7,386.97 is: 10,195.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.45 : 17,514.61 = 7,386.97 : x
  2. Step 2: Convert to fraction form
    12,690.45/17,514.61 = 7,386.97/x
  3. Step 3: Cross multiply
    12,690.45x = 17,514.61 × 7,386.97
  4. Step 4: Simplify right side
    12,690.45x = 129,379,898.63
  5. Step 5: Solve for x
    x = 129,379,898.63/12,690.45
  6. Step 6: Final answer
    x = 10,195.06

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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.