Home / 20,289.12-30,433.74-7,134.36

Finding the Fourth Proportional to 20,289.12, 30,433.74 and 7,134.36

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Solution

The fourth proportional to 20,289.12, 30,433.74 and 7,134.36 is: 10,701.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.12 : 30,433.74 = 7,134.36 : x
  2. Step 2: Convert to fraction form
    20,289.12/30,433.74 = 7,134.36/x
  3. Step 3: Cross multiply
    20,289.12x = 30,433.74 × 7,134.36
  4. Step 4: Simplify right side
    20,289.12x = 217,125,257.31
  5. Step 5: Solve for x
    x = 217,125,257.31/20,289.12
  6. Step 6: Final answer
    x = 10,701.56

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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.