Home / 20,139.99-30,210.26-6,992.61

Finding the Fourth Proportional to 20,139.99, 30,210.26 and 6,992.61

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Solution

The fourth proportional to 20,139.99, 30,210.26 and 6,992.61 is: 10,489.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.99 : 30,210.26 = 6,992.61 : x
  2. Step 2: Convert to fraction form
    20,139.99/30,210.26 = 6,992.61/x
  3. Step 3: Cross multiply
    20,139.99x = 30,210.26 × 6,992.61
  4. Step 4: Simplify right side
    20,139.99x = 211,248,531.22
  5. Step 5: Solve for x
    x = 211,248,531.22/20,139.99
  6. Step 6: Final answer
    x = 10,489.01

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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.