Home / 20,320.97-30,473.57-6,991.45

Finding the Fourth Proportional to 20,320.97, 30,473.57 and 6,991.45

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Solution

The fourth proportional to 20,320.97, 30,473.57 and 6,991.45 is: 10,484.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.97 : 30,473.57 = 6,991.45 : x
  2. Step 2: Convert to fraction form
    20,320.97/30,473.57 = 6,991.45/x
  3. Step 3: Cross multiply
    20,320.97x = 30,473.57 × 6,991.45
  4. Step 4: Simplify right side
    20,320.97x = 213,054,382.27
  5. Step 5: Solve for x
    x = 213,054,382.27/20,320.97
  6. Step 6: Final answer
    x = 10,484.46

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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.