Home / 19,987.21-27,580.93-11,032.80

Finding the Fourth Proportional to 19,987.21, 27,580.93 and 11,032.80

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Solution

The fourth proportional to 19,987.21, 27,580.93 and 11,032.80 is: 15,224.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.21 : 27,580.93 = 11,032.80 : x
  2. Step 2: Convert to fraction form
    19,987.21/27,580.93 = 11,032.80/x
  3. Step 3: Cross multiply
    19,987.21x = 27,580.93 × 11,032.80
  4. Step 4: Simplify right side
    19,987.21x = 304,294,884.50
  5. Step 5: Solve for x
    x = 304,294,884.50/19,987.21
  6. Step 6: Final answer
    x = 15,224.48

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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.