Home / 28,415.24-42,622.46-12,821.88

Finding the Fourth Proportional to 28,415.24, 42,622.46 and 12,821.88

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Solution

The fourth proportional to 28,415.24, 42,622.46 and 12,821.88 is: 19,232.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,415.24 : 42,622.46 = 12,821.88 : x
  2. Step 2: Convert to fraction form
    28,415.24/42,622.46 = 12,821.88/x
  3. Step 3: Cross multiply
    28,415.24x = 42,622.46 × 12,821.88
  4. Step 4: Simplify right side
    28,415.24x = 546,500,067.42
  5. Step 5: Solve for x
    x = 546,500,067.42/28,415.24
  6. Step 6: Final answer
    x = 19,232.64

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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.