Home / 28,695.87-39,600.09-16,120.62

Finding the Fourth Proportional to 28,695.87, 39,600.09 and 16,120.62

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Solution

The fourth proportional to 28,695.87, 39,600.09 and 16,120.62 is: 22,246.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,695.87 : 39,600.09 = 16,120.62 : x
  2. Step 2: Convert to fraction form
    28,695.87/39,600.09 = 16,120.62/x
  3. Step 3: Cross multiply
    28,695.87x = 39,600.09 × 16,120.62
  4. Step 4: Simplify right side
    28,695.87x = 638,378,002.86
  5. Step 5: Solve for x
    x = 638,378,002.86/28,695.87
  6. Step 6: Final answer
    x = 22,246.34

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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.