Home / 20,827.53-28,755.41-18,585.55

Finding the Fourth Proportional to 20,827.53, 28,755.41 and 18,585.55

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Solution

The fourth proportional to 20,827.53, 28,755.41 and 18,585.55 is: 25,660.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.53 : 28,755.41 = 18,585.55 : x
  2. Step 2: Convert to fraction form
    20,827.53/28,755.41 = 18,585.55/x
  3. Step 3: Cross multiply
    20,827.53x = 28,755.41 × 18,585.55
  4. Step 4: Simplify right side
    20,827.53x = 534,435,053.34
  5. Step 5: Solve for x
    x = 534,435,053.34/20,827.53
  6. Step 6: Final answer
    x = 25,660.03

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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.