Home / 20,727.90-31,097.93-6,690.09

Finding the Fourth Proportional to 20,727.90, 31,097.93 and 6,690.09

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Solution

The fourth proportional to 20,727.90, 31,097.93 and 6,690.09 is: 10,037.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.90 : 31,097.93 = 6,690.09 : x
  2. Step 2: Convert to fraction form
    20,727.90/31,097.93 = 6,690.09/x
  3. Step 3: Cross multiply
    20,727.90x = 31,097.93 × 6,690.09
  4. Step 4: Simplify right side
    20,727.90x = 208,048,033.68
  5. Step 5: Solve for x
    x = 208,048,033.68/20,727.90
  6. Step 6: Final answer
    x = 10,037.10

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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.