Home / 28,408.88-42,619.46-10,878.70

Finding the Fourth Proportional to 28,408.88, 42,619.46 and 10,878.70

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Solution

The fourth proportional to 28,408.88, 42,619.46 and 10,878.70 is: 16,320.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.88 : 42,619.46 = 10,878.70 : x
  2. Step 2: Convert to fraction form
    28,408.88/42,619.46 = 10,878.70/x
  3. Step 3: Cross multiply
    28,408.88x = 42,619.46 × 10,878.70
  4. Step 4: Simplify right side
    28,408.88x = 463,644,520.12
  5. Step 5: Solve for x
    x = 463,644,520.12/28,408.88
  6. Step 6: Final answer
    x = 16,320.41

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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.