Home / 20,383,764.96-28,128,746.16-11,091,371.52

Finding the Fourth Proportional to 20,383,764.96, 28,128,746.16 and 11,091,371.52

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Solution

The fourth proportional to 20,383,764.96, 28,128,746.16 and 11,091,371.52 is: 15,305,630.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383,764.96 : 28,128,746.16 = 11,091,371.52 : x
  2. Step 2: Convert to fraction form
    20,383,764.96/28,128,746.16 = 11,091,371.52/x
  3. Step 3: Cross multiply
    20,383,764.96x = 28,128,746.16 × 11,091,371.52
  4. Step 4: Simplify right side
    20,383,764.96x = 311,986,374,052,333.38
  5. Step 5: Solve for x
    x = 311,986,374,052,333.38/20,383,764.96
  6. Step 6: Final answer
    x = 15,305,630.47

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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.