Home / 19,980.68-27,556.40-12,021.41

Finding the Fourth Proportional to 19,980.68, 27,556.40 and 12,021.41

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Solution

The fourth proportional to 19,980.68, 27,556.40 and 12,021.41 is: 16,579.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.68 : 27,556.40 = 12,021.41 : x
  2. Step 2: Convert to fraction form
    19,980.68/27,556.40 = 12,021.41/x
  3. Step 3: Cross multiply
    19,980.68x = 27,556.40 × 12,021.41
  4. Step 4: Simplify right side
    19,980.68x = 331,266,881.47
  5. Step 5: Solve for x
    x = 331,266,881.47/19,980.68
  6. Step 6: Final answer
    x = 16,579.36

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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.