Home / 20,285.57-30,425.27-7,134.86

Finding the Fourth Proportional to 20,285.57, 30,425.27 and 7,134.86

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Solution

The fourth proportional to 20,285.57, 30,425.27 and 7,134.86 is: 10,701.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.57 : 30,425.27 = 7,134.86 : x
  2. Step 2: Convert to fraction form
    20,285.57/30,425.27 = 7,134.86/x
  3. Step 3: Cross multiply
    20,285.57x = 30,425.27 × 7,134.86
  4. Step 4: Simplify right side
    20,285.57x = 217,080,109.06
  5. Step 5: Solve for x
    x = 217,080,109.06/20,285.57
  6. Step 6: Final answer
    x = 10,701.21

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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.