Home / 28,382.12-39,166.90-16,445.18

Finding the Fourth Proportional to 28,382.12, 39,166.90 and 16,445.18

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Solution

The fourth proportional to 28,382.12, 39,166.90 and 16,445.18 is: 22,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.12 : 39,166.90 = 16,445.18 : x
  2. Step 2: Convert to fraction form
    28,382.12/39,166.90 = 16,445.18/x
  3. Step 3: Cross multiply
    28,382.12x = 39,166.90 × 16,445.18
  4. Step 4: Simplify right side
    28,382.12x = 644,106,720.54
  5. Step 5: Solve for x
    x = 644,106,720.54/28,382.12
  6. Step 6: Final answer
    x = 22,694.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.