Home / 28,742.87-39,665.16-16,167.62

Finding the Fourth Proportional to 28,742.87, 39,665.16 and 16,167.62

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Solution

The fourth proportional to 28,742.87, 39,665.16 and 16,167.62 is: 22,311.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,742.87 : 39,665.16 = 16,167.62 : x
  2. Step 2: Convert to fraction form
    28,742.87/39,665.16 = 16,167.62/x
  3. Step 3: Cross multiply
    28,742.87x = 39,665.16 × 16,167.62
  4. Step 4: Simplify right side
    28,742.87x = 641,291,234.12
  5. Step 5: Solve for x
    x = 641,291,234.12/28,742.87
  6. Step 6: Final answer
    x = 22,311.32

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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.