Home / 20,924.58-31,379.12-6,880.51

Finding the Fourth Proportional to 20,924.58, 31,379.12 and 6,880.51

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Solution

The fourth proportional to 20,924.58, 31,379.12 and 6,880.51 is: 10,318.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.58 : 31,379.12 = 6,880.51 : x
  2. Step 2: Convert to fraction form
    20,924.58/31,379.12 = 6,880.51/x
  3. Step 3: Cross multiply
    20,924.58x = 31,379.12 × 6,880.51
  4. Step 4: Simplify right side
    20,924.58x = 215,904,266.55
  5. Step 5: Solve for x
    x = 215,904,266.55/20,924.58
  6. Step 6: Final answer
    x = 10,318.21

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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.