Home / 20,140.23-30,215.36-6,992.72

Finding the Fourth Proportional to 20,140.23, 30,215.36 and 6,992.72

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Solution

The fourth proportional to 20,140.23, 30,215.36 and 6,992.72 is: 10,490.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.23 : 30,215.36 = 6,992.72 : x
  2. Step 2: Convert to fraction form
    20,140.23/30,215.36 = 6,992.72/x
  3. Step 3: Cross multiply
    20,140.23x = 30,215.36 × 6,992.72
  4. Step 4: Simplify right side
    20,140.23x = 211,287,366.14
  5. Step 5: Solve for x
    x = 211,287,366.14/20,140.23
  6. Step 6: Final answer
    x = 10,490.81

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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.