Home / 19,980.33-27,573.76-11,485.21

Finding the Fourth Proportional to 19,980.33, 27,573.76 and 11,485.21

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Solution

The fourth proportional to 19,980.33, 27,573.76 and 11,485.21 is: 15,850.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.33 : 27,573.76 = 11,485.21 : x
  2. Step 2: Convert to fraction form
    19,980.33/27,573.76 = 11,485.21/x
  3. Step 3: Cross multiply
    19,980.33x = 27,573.76 × 11,485.21
  4. Step 4: Simplify right side
    19,980.33x = 316,690,366.66
  5. Step 5: Solve for x
    x = 316,690,366.66/19,980.33
  6. Step 6: Final answer
    x = 15,850.11

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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.