Home / 20,585.25-28,408.86-11,632.55

Finding the Fourth Proportional to 20,585.25, 28,408.86 and 11,632.55

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Solution

The fourth proportional to 20,585.25, 28,408.86 and 11,632.55 is: 16,053.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,585.25 : 28,408.86 = 11,632.55 : x
  2. Step 2: Convert to fraction form
    20,585.25/28,408.86 = 11,632.55/x
  3. Step 3: Cross multiply
    20,585.25x = 28,408.86 × 11,632.55
  4. Step 4: Simplify right side
    20,585.25x = 330,467,342.35
  5. Step 5: Solve for x
    x = 330,467,342.35/20,585.25
  6. Step 6: Final answer
    x = 16,053.60

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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.