Home / 20,212.40-27,893.04-11,259.80

Finding the Fourth Proportional to 20,212.40, 27,893.04 and 11,259.80

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Solution

The fourth proportional to 20,212.40, 27,893.04 and 11,259.80 is: 15,538.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.40 : 27,893.04 = 11,259.80 : x
  2. Step 2: Convert to fraction form
    20,212.40/27,893.04 = 11,259.80/x
  3. Step 3: Cross multiply
    20,212.40x = 27,893.04 × 11,259.80
  4. Step 4: Simplify right side
    20,212.40x = 314,070,051.79
  5. Step 5: Solve for x
    x = 314,070,051.79/20,212.40
  6. Step 6: Final answer
    x = 15,538.48

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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.