Home / 20,606.64-28,443.87-12,108.62

Finding the Fourth Proportional to 20,606.64, 28,443.87 and 12,108.62

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Solution

The fourth proportional to 20,606.64, 28,443.87 and 12,108.62 is: 16,713.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.64 : 28,443.87 = 12,108.62 : x
  2. Step 2: Convert to fraction form
    20,606.64/28,443.87 = 12,108.62/x
  3. Step 3: Cross multiply
    20,606.64x = 28,443.87 × 12,108.62
  4. Step 4: Simplify right side
    20,606.64x = 344,415,870.94
  5. Step 5: Solve for x
    x = 344,415,870.94/20,606.64
  6. Step 6: Final answer
    x = 16,713.83

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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.