Home / 20,382.08-28,114.32-14,725.13

Finding the Fourth Proportional to 20,382.08, 28,114.32 and 14,725.13

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Solution

The fourth proportional to 20,382.08, 28,114.32 and 14,725.13 is: 20,311.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.08 : 28,114.32 = 14,725.13 : x
  2. Step 2: Convert to fraction form
    20,382.08/28,114.32 = 14,725.13/x
  3. Step 3: Cross multiply
    20,382.08x = 28,114.32 × 14,725.13
  4. Step 4: Simplify right side
    20,382.08x = 413,987,016.86
  5. Step 5: Solve for x
    x = 413,987,016.86/20,382.08
  6. Step 6: Final answer
    x = 20,311.32

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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.