Home / 19,890.09-27,422.82-16,291.80

Finding the Fourth Proportional to 19,890.09, 27,422.82 and 16,291.80

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Solution

The fourth proportional to 19,890.09, 27,422.82 and 16,291.80 is: 22,461.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.09 : 27,422.82 = 16,291.80 : x
  2. Step 2: Convert to fraction form
    19,890.09/27,422.82 = 16,291.80/x
  3. Step 3: Cross multiply
    19,890.09x = 27,422.82 × 16,291.80
  4. Step 4: Simplify right side
    19,890.09x = 446,767,098.88
  5. Step 5: Solve for x
    x = 446,767,098.88/19,890.09
  6. Step 6: Final answer
    x = 22,461.79

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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.