Home / 20,566.43-28,376.79-12,499.94

Finding the Fourth Proportional to 20,566.43, 28,376.79 and 12,499.94

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Solution

The fourth proportional to 20,566.43, 28,376.79 and 12,499.94 is: 17,246.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.43 : 28,376.79 = 12,499.94 : x
  2. Step 2: Convert to fraction form
    20,566.43/28,376.79 = 12,499.94/x
  3. Step 3: Cross multiply
    20,566.43x = 28,376.79 × 12,499.94
  4. Step 4: Simplify right side
    20,566.43x = 354,708,243.33
  5. Step 5: Solve for x
    x = 354,708,243.33/20,566.43
  6. Step 6: Final answer
    x = 17,246.95

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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.