Home / 20,426.77-28,162.85-13,243.96

Finding the Fourth Proportional to 20,426.77, 28,162.85 and 13,243.96

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Solution

The fourth proportional to 20,426.77, 28,162.85 and 13,243.96 is: 18,259.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.77 : 28,162.85 = 13,243.96 : x
  2. Step 2: Convert to fraction form
    20,426.77/28,162.85 = 13,243.96/x
  3. Step 3: Cross multiply
    20,426.77x = 28,162.85 × 13,243.96
  4. Step 4: Simplify right side
    20,426.77x = 372,987,658.89
  5. Step 5: Solve for x
    x = 372,987,658.89/20,426.77
  6. Step 6: Final answer
    x = 18,259.75

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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.