Home / 20,858.27-28,784.23-11,426.83

Finding the Fourth Proportional to 20,858.27, 28,784.23 and 11,426.83

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Solution

The fourth proportional to 20,858.27, 28,784.23 and 11,426.83 is: 15,768.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.27 : 28,784.23 = 11,426.83 : x
  2. Step 2: Convert to fraction form
    20,858.27/28,784.23 = 11,426.83/x
  3. Step 3: Cross multiply
    20,858.27x = 28,784.23 × 11,426.83
  4. Step 4: Simplify right side
    20,858.27x = 328,912,502.89
  5. Step 5: Solve for x
    x = 328,912,502.89/20,858.27
  6. Step 6: Final answer
    x = 15,768.93

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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.