Home / 19,980.06-27,574.29-12,021

Finding the Fourth Proportional to 19,980.06, 27,574.29 and 12,021

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Solution

The fourth proportional to 19,980.06, 27,574.29 and 12,021 is: 16,590.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.06 : 27,574.29 = 12,021 : x
  2. Step 2: Convert to fraction form
    19,980.06/27,574.29 = 12,021/x
  3. Step 3: Cross multiply
    19,980.06x = 27,574.29 × 12,021
  4. Step 4: Simplify right side
    19,980.06x = 331,470,540.09
  5. Step 5: Solve for x
    x = 331,470,540.09/19,980.06
  6. Step 6: Final answer
    x = 16,590.07

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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.