Home / 20,801.45-28,711.16-11,854.26

Finding the Fourth Proportional to 20,801.45, 28,711.16 and 11,854.26

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Solution

The fourth proportional to 20,801.45, 28,711.16 and 11,854.26 is: 16,361.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.45 : 28,711.16 = 11,854.26 : x
  2. Step 2: Convert to fraction form
    20,801.45/28,711.16 = 11,854.26/x
  3. Step 3: Cross multiply
    20,801.45x = 28,711.16 × 11,854.26
  4. Step 4: Simplify right side
    20,801.45x = 340,349,555.54
  5. Step 5: Solve for x
    x = 340,349,555.54/20,801.45
  6. Step 6: Final answer
    x = 16,361.82

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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.