Home / 20,142.56-30,215.46-6,291.56

Finding the Fourth Proportional to 20,142.56, 30,215.46 and 6,291.56

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Solution

The fourth proportional to 20,142.56, 30,215.46 and 6,291.56 is: 9,437.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.56 : 30,215.46 = 6,291.56 : x
  2. Step 2: Convert to fraction form
    20,142.56/30,215.46 = 6,291.56/x
  3. Step 3: Cross multiply
    20,142.56x = 30,215.46 × 6,291.56
  4. Step 4: Simplify right side
    20,142.56x = 190,102,478.65
  5. Step 5: Solve for x
    x = 190,102,478.65/20,142.56
  6. Step 6: Final answer
    x = 9,437.85

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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.