Home / 19,605.25-27,036.91-15,121.90

Finding the Fourth Proportional to 19,605.25, 27,036.91 and 15,121.90

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Solution

The fourth proportional to 19,605.25, 27,036.91 and 15,121.90 is: 20,854.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,605.25 : 27,036.91 = 15,121.90 : x
  2. Step 2: Convert to fraction form
    19,605.25/27,036.91 = 15,121.90/x
  3. Step 3: Cross multiply
    19,605.25x = 27,036.91 × 15,121.90
  4. Step 4: Simplify right side
    19,605.25x = 408,849,449.33
  5. Step 5: Solve for x
    x = 408,849,449.33/19,605.25
  6. Step 6: Final answer
    x = 20,854.08

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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.