Home / 28,643.12-39,529.32-16,068.68

Finding the Fourth Proportional to 28,643.12, 39,529.32 and 16,068.68

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Solution

The fourth proportional to 28,643.12, 39,529.32 and 16,068.68 is: 22,175.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,643.12 : 39,529.32 = 16,068.68 : x
  2. Step 2: Convert to fraction form
    28,643.12/39,529.32 = 16,068.68/x
  3. Step 3: Cross multiply
    28,643.12x = 39,529.32 × 16,068.68
  4. Step 4: Simplify right side
    28,643.12x = 635,183,993.70
  5. Step 5: Solve for x
    x = 635,183,993.70/28,643.12
  6. Step 6: Final answer
    x = 22,175.80

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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.