Home / 19,707.81-27,195.70-11,208.78

Finding the Fourth Proportional to 19,707.81, 27,195.70 and 11,208.78

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Solution

The fourth proportional to 19,707.81, 27,195.70 and 11,208.78 is: 15,467.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,707.81 : 27,195.70 = 11,208.78 : x
  2. Step 2: Convert to fraction form
    19,707.81/27,195.70 = 11,208.78/x
  3. Step 3: Cross multiply
    19,707.81x = 27,195.70 × 11,208.78
  4. Step 4: Simplify right side
    19,707.81x = 304,830,618.25
  5. Step 5: Solve for x
    x = 304,830,618.25/19,707.81
  6. Step 6: Final answer
    x = 15,467.50

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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.