Home / 20,494.37-28,282.71-11,420.35

Finding the Fourth Proportional to 20,494.37, 28,282.71 and 11,420.35

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Solution

The fourth proportional to 20,494.37, 28,282.71 and 11,420.35 is: 15,760.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,494.37 : 28,282.71 = 11,420.35 : x
  2. Step 2: Convert to fraction form
    20,494.37/28,282.71 = 11,420.35/x
  3. Step 3: Cross multiply
    20,494.37x = 28,282.71 × 11,420.35
  4. Step 4: Simplify right side
    20,494.37x = 322,998,447.15
  5. Step 5: Solve for x
    x = 322,998,447.15/20,494.37
  6. Step 6: Final answer
    x = 15,760.35

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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.