Home / 28,119.84-42,185.94-10,589.64

Finding the Fourth Proportional to 28,119.84, 42,185.94 and 10,589.64

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Solution

The fourth proportional to 28,119.84, 42,185.94 and 10,589.64 is: 15,886.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.84 : 42,185.94 = 10,589.64 : x
  2. Step 2: Convert to fraction form
    28,119.84/42,185.94 = 10,589.64/x
  3. Step 3: Cross multiply
    28,119.84x = 42,185.94 × 10,589.64
  4. Step 4: Simplify right side
    28,119.84x = 446,733,917.66
  5. Step 5: Solve for x
    x = 446,733,917.66/28,119.84
  6. Step 6: Final answer
    x = 15,886.79

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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.