Home / 28,451.66-42,682.98-10,920.12

Finding the Fourth Proportional to 28,451.66, 42,682.98 and 10,920.12

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Solution

The fourth proportional to 28,451.66, 42,682.98 and 10,920.12 is: 16,382.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.66 : 42,682.98 = 10,920.12 : x
  2. Step 2: Convert to fraction form
    28,451.66/42,682.98 = 10,920.12/x
  3. Step 3: Cross multiply
    28,451.66x = 42,682.98 × 10,920.12
  4. Step 4: Simplify right side
    28,451.66x = 466,103,052.31
  5. Step 5: Solve for x
    x = 466,103,052.31/28,451.66
  6. Step 6: Final answer
    x = 16,382.28

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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.