Home / 20,767.68-31,003.58-20,038.64

Finding the Fourth Proportional to 20,767.68, 31,003.58 and 20,038.64

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Solution

The fourth proportional to 20,767.68, 31,003.58 and 20,038.64 is: 29,915.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.68 : 31,003.58 = 20,038.64 : x
  2. Step 2: Convert to fraction form
    20,767.68/31,003.58 = 20,038.64/x
  3. Step 3: Cross multiply
    20,767.68x = 31,003.58 × 20,038.64
  4. Step 4: Simplify right side
    20,767.68x = 621,269,578.33
  5. Step 5: Solve for x
    x = 621,269,578.33/20,767.68
  6. Step 6: Final answer
    x = 29,915.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.