Home / 20,797.02-31,205.25-12,039.30

Finding the Fourth Proportional to 20,797.02, 31,205.25 and 12,039.30

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Solution

The fourth proportional to 20,797.02, 31,205.25 and 12,039.30 is: 18,064.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.02 : 31,205.25 = 12,039.30 : x
  2. Step 2: Convert to fraction form
    20,797.02/31,205.25 = 12,039.30/x
  3. Step 3: Cross multiply
    20,797.02x = 31,205.25 × 12,039.30
  4. Step 4: Simplify right side
    20,797.02x = 375,689,366.33
  5. Step 5: Solve for x
    x = 375,689,366.33/20,797.02
  6. Step 6: Final answer
    x = 18,064.58

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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.