Home / 20,015.79-30,029.76-10,654.22

Finding the Fourth Proportional to 20,015.79, 30,029.76 and 10,654.22

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Solution

The fourth proportional to 20,015.79, 30,029.76 and 10,654.22 is: 15,984.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.79 : 30,029.76 = 10,654.22 : x
  2. Step 2: Convert to fraction form
    20,015.79/30,029.76 = 10,654.22/x
  3. Step 3: Cross multiply
    20,015.79x = 30,029.76 × 10,654.22
  4. Step 4: Simplify right side
    20,015.79x = 319,943,519.44
  5. Step 5: Solve for x
    x = 319,943,519.44/20,015.79
  6. Step 6: Final answer
    x = 15,984.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.