Home / 20,736.23-28,615.56-12,667.10

Finding the Fourth Proportional to 20,736.23, 28,615.56 and 12,667.10

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Solution

The fourth proportional to 20,736.23, 28,615.56 and 12,667.10 is: 17,480.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.23 : 28,615.56 = 12,667.10 : x
  2. Step 2: Convert to fraction form
    20,736.23/28,615.56 = 12,667.10/x
  3. Step 3: Cross multiply
    20,736.23x = 28,615.56 × 12,667.10
  4. Step 4: Simplify right side
    20,736.23x = 362,476,160.08
  5. Step 5: Solve for x
    x = 362,476,160.08/20,736.23
  6. Step 6: Final answer
    x = 17,480.33

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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.