Home / 28,382.70-39,162.12-16,445.30

Finding the Fourth Proportional to 28,382.70, 39,162.12 and 16,445.30

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Solution

The fourth proportional to 28,382.70, 39,162.12 and 16,445.30 is: 22,691.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.70 : 39,162.12 = 16,445.30 : x
  2. Step 2: Convert to fraction form
    28,382.70/39,162.12 = 16,445.30/x
  3. Step 3: Cross multiply
    28,382.70x = 39,162.12 × 16,445.30
  4. Step 4: Simplify right side
    28,382.70x = 644,032,812.04
  5. Step 5: Solve for x
    x = 644,032,812.04/28,382.70
  6. Step 6: Final answer
    x = 22,691.03

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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.