Home / 36,128.40-54,095.40-28,287.60

Finding the Fourth Proportional to 36,128.40, 54,095.40 and 28,287.60

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Solution

The fourth proportional to 36,128.40, 54,095.40 and 28,287.60 is: 42,355.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,128.40 : 54,095.40 = 28,287.60 : x
  2. Step 2: Convert to fraction form
    36,128.40/54,095.40 = 28,287.60/x
  3. Step 3: Cross multiply
    36,128.40x = 54,095.40 × 28,287.60
  4. Step 4: Simplify right side
    36,128.40x = 1,530,229,037.04
  5. Step 5: Solve for x
    x = 1,530,229,037.04/36,128.40
  6. Step 6: Final answer
    x = 42,355.29

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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.