Home / 20,816.43-28,727.73-12,323.43

Finding the Fourth Proportional to 20,816.43, 28,727.73 and 12,323.43

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Solution

The fourth proportional to 20,816.43, 28,727.73 and 12,323.43 is: 17,006.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816.43 : 28,727.73 = 12,323.43 : x
  2. Step 2: Convert to fraction form
    20,816.43/28,727.73 = 12,323.43/x
  3. Step 3: Cross multiply
    20,816.43x = 28,727.73 × 12,323.43
  4. Step 4: Simplify right side
    20,816.43x = 354,024,169.71
  5. Step 5: Solve for x
    x = 354,024,169.71/20,816.43
  6. Step 6: Final answer
    x = 17,006.96

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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.