Home / 28,120.88-42,184.20-10,605.44

Finding the Fourth Proportional to 28,120.88, 42,184.20 and 10,605.44

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Solution

The fourth proportional to 28,120.88, 42,184.20 and 10,605.44 is: 15,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.88 : 42,184.20 = 10,605.44 : x
  2. Step 2: Convert to fraction form
    28,120.88/42,184.20 = 10,605.44/x
  3. Step 3: Cross multiply
    28,120.88x = 42,184.20 × 10,605.44
  4. Step 4: Simplify right side
    28,120.88x = 447,382,002.05
  5. Step 5: Solve for x
    x = 447,382,002.05/28,120.88
  6. Step 6: Final answer
    x = 15,909.25

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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.