Home / 20,774.51-28,667.49-11,343.05

Finding the Fourth Proportional to 20,774.51, 28,667.49 and 11,343.05

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Solution

The fourth proportional to 20,774.51, 28,667.49 and 11,343.05 is: 15,652.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.51 : 28,667.49 = 11,343.05 : x
  2. Step 2: Convert to fraction form
    20,774.51/28,667.49 = 11,343.05/x
  3. Step 3: Cross multiply
    20,774.51x = 28,667.49 × 11,343.05
  4. Step 4: Simplify right side
    20,774.51x = 325,176,772.44
  5. Step 5: Solve for x
    x = 325,176,772.44/20,774.51
  6. Step 6: Final answer
    x = 15,652.68

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Half scale
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Double scale
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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.