Home / 27,780.24-38,296.82-19,808.60

Finding the Fourth Proportional to 27,780.24, 38,296.82 and 19,808.60

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Solution

The fourth proportional to 27,780.24, 38,296.82 and 19,808.60 is: 27,307.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.24 : 38,296.82 = 19,808.60 : x
  2. Step 2: Convert to fraction form
    27,780.24/38,296.82 = 19,808.60/x
  3. Step 3: Cross multiply
    27,780.24x = 38,296.82 × 19,808.60
  4. Step 4: Simplify right side
    27,780.24x = 758,606,388.65
  5. Step 5: Solve for x
    x = 758,606,388.65/27,780.24
  6. Step 6: Final answer
    x = 27,307.41

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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.