Home / 32,128.80-48,236.40-20,464.80

Finding the Fourth Proportional to 32,128.80, 48,236.40 and 20,464.80

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Solution

The fourth proportional to 32,128.80, 48,236.40 and 20,464.80 is: 30,724.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,128.80 : 48,236.40 = 20,464.80 : x
  2. Step 2: Convert to fraction form
    32,128.80/48,236.40 = 20,464.80/x
  3. Step 3: Cross multiply
    32,128.80x = 48,236.40 × 20,464.80
  4. Step 4: Simplify right side
    32,128.80x = 987,148,278.72
  5. Step 5: Solve for x
    x = 987,148,278.72/32,128.80
  6. Step 6: Final answer
    x = 30,724.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.