Home / 28,923.60-43,410-20,623.92

Finding the Fourth Proportional to 28,923.60, 43,410 and 20,623.92

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Solution

The fourth proportional to 28,923.60, 43,410 and 20,623.92 is: 30,953.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,923.60 : 43,410 = 20,623.92 : x
  2. Step 2: Convert to fraction form
    28,923.60/43,410 = 20,623.92/x
  3. Step 3: Cross multiply
    28,923.60x = 43,410 × 20,623.92
  4. Step 4: Simplify right side
    28,923.60x = 895,284,367.20
  5. Step 5: Solve for x
    x = 895,284,367.20/28,923.60
  6. Step 6: Final answer
    x = 30,953.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.