Home / 28,182.12-42,273.09-8,460.66

Finding the Fourth Proportional to 28,182.12, 42,273.09 and 8,460.66

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Solution

The fourth proportional to 28,182.12, 42,273.09 and 8,460.66 is: 12,690.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,182.12 : 42,273.09 = 8,460.66 : x
  2. Step 2: Convert to fraction form
    28,182.12/42,273.09 = 8,460.66/x
  3. Step 3: Cross multiply
    28,182.12x = 42,273.09 × 8,460.66
  4. Step 4: Simplify right side
    28,182.12x = 357,658,241.64
  5. Step 5: Solve for x
    x = 357,658,241.64/28,182.12
  6. Step 6: Final answer
    x = 12,690.96

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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.