Home / 21,007.26-28,991.16-12,054.69

Finding the Fourth Proportional to 21,007.26, 28,991.16 and 12,054.69

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Solution

The fourth proportional to 21,007.26, 28,991.16 and 12,054.69 is: 16,636.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007.26 : 28,991.16 = 12,054.69 : x
  2. Step 2: Convert to fraction form
    21,007.26/28,991.16 = 12,054.69/x
  3. Step 3: Cross multiply
    21,007.26x = 28,991.16 × 12,054.69
  4. Step 4: Simplify right side
    21,007.26x = 349,479,446.54
  5. Step 5: Solve for x
    x = 349,479,446.54/21,007.26
  6. Step 6: Final answer
    x = 16,636.13

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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.