Home / 20,380.57-28,112.23-14,723.63

Finding the Fourth Proportional to 20,380.57, 28,112.23 and 14,723.63

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Solution

The fourth proportional to 20,380.57, 28,112.23 and 14,723.63 is: 20,309.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380.57 : 28,112.23 = 14,723.63 : x
  2. Step 2: Convert to fraction form
    20,380.57/28,112.23 = 14,723.63/x
  3. Step 3: Cross multiply
    20,380.57x = 28,112.23 × 14,723.63
  4. Step 4: Simplify right side
    20,380.57x = 413,914,056.26
  5. Step 5: Solve for x
    x = 413,914,056.26/20,380.57
  6. Step 6: Final answer
    x = 20,309.25

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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.