Home / 19,971.36-27,561.60-11,020.80

Finding the Fourth Proportional to 19,971.36, 27,561.60 and 11,020.80

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Solution

The fourth proportional to 19,971.36, 27,561.60 and 11,020.80 is: 15,209.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,971.36 : 27,561.60 = 11,020.80 : x
  2. Step 2: Convert to fraction form
    19,971.36/27,561.60 = 11,020.80/x
  3. Step 3: Cross multiply
    19,971.36x = 27,561.60 × 11,020.80
  4. Step 4: Simplify right side
    19,971.36x = 303,750,881.28
  5. Step 5: Solve for x
    x = 303,750,881.28/19,971.36
  6. Step 6: Final answer
    x = 15,209.32

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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.