Home / 20,625.58-28,470.06-12,127.30

Finding the Fourth Proportional to 20,625.58, 28,470.06 and 12,127.30

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Solution

The fourth proportional to 20,625.58, 28,470.06 and 12,127.30 is: 16,739.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,625.58 : 28,470.06 = 12,127.30 : x
  2. Step 2: Convert to fraction form
    20,625.58/28,470.06 = 12,127.30/x
  3. Step 3: Cross multiply
    20,625.58x = 28,470.06 × 12,127.30
  4. Step 4: Simplify right side
    20,625.58x = 345,264,958.64
  5. Step 5: Solve for x
    x = 345,264,958.64/20,625.58
  6. Step 6: Final answer
    x = 16,739.65

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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.