Home / 19,707.51-27,195.21-11,211.69

Finding the Fourth Proportional to 19,707.51, 27,195.21 and 11,211.69

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Solution

The fourth proportional to 19,707.51, 27,195.21 and 11,211.69 is: 15,471.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,707.51 : 27,195.21 = 11,211.69 : x
  2. Step 2: Convert to fraction form
    19,707.51/27,195.21 = 11,211.69/x
  3. Step 3: Cross multiply
    19,707.51x = 27,195.21 × 11,211.69
  4. Step 4: Simplify right side
    19,707.51x = 304,904,264.00
  5. Step 5: Solve for x
    x = 304,904,264.00/19,707.51
  6. Step 6: Final answer
    x = 15,471.48

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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.