Home / 38,478.22-53,100.78-21,250.54

Finding the Fourth Proportional to 38,478.22, 53,100.78 and 21,250.54

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Solution

The fourth proportional to 38,478.22, 53,100.78 and 21,250.54 is: 29,326.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,478.22 : 53,100.78 = 21,250.54 : x
  2. Step 2: Convert to fraction form
    38,478.22/53,100.78 = 21,250.54/x
  3. Step 3: Cross multiply
    38,478.22x = 53,100.78 × 21,250.54
  4. Step 4: Simplify right side
    38,478.22x = 1,128,420,249.42
  5. Step 5: Solve for x
    x = 1,128,420,249.42/38,478.22
  6. Step 6: Final answer
    x = 29,326.21

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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.