Home / 39,825.68-54,958.38-21,676.76

Finding the Fourth Proportional to 39,825.68, 54,958.38 and 21,676.76

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Solution

The fourth proportional to 39,825.68, 54,958.38 and 21,676.76 is: 29,913.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,825.68 : 54,958.38 = 21,676.76 : x
  2. Step 2: Convert to fraction form
    39,825.68/54,958.38 = 21,676.76/x
  3. Step 3: Cross multiply
    39,825.68x = 54,958.38 × 21,676.76
  4. Step 4: Simplify right side
    39,825.68x = 1,191,319,894.34
  5. Step 5: Solve for x
    x = 1,191,319,894.34/39,825.68
  6. Step 6: Final answer
    x = 29,913.36

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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.