Home / 20,853.65-31,283.21-10,993.32

Finding the Fourth Proportional to 20,853.65, 31,283.21 and 10,993.32

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Solution

The fourth proportional to 20,853.65, 31,283.21 and 10,993.32 is: 16,491.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.65 : 31,283.21 = 10,993.32 : x
  2. Step 2: Convert to fraction form
    20,853.65/31,283.21 = 10,993.32/x
  3. Step 3: Cross multiply
    20,853.65x = 31,283.21 × 10,993.32
  4. Step 4: Simplify right side
    20,853.65x = 343,906,365.64
  5. Step 5: Solve for x
    x = 343,906,365.64/20,853.65
  6. Step 6: Final answer
    x = 16,491.42

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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.