Home / 28,538.48-39,383.88-15,792.32

Finding the Fourth Proportional to 28,538.48, 39,383.88 and 15,792.32

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Solution

The fourth proportional to 28,538.48, 39,383.88 and 15,792.32 is: 21,793.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.48 : 39,383.88 = 15,792.32 : x
  2. Step 2: Convert to fraction form
    28,538.48/39,383.88 = 15,792.32/x
  3. Step 3: Cross multiply
    28,538.48x = 39,383.88 × 15,792.32
  4. Step 4: Simplify right side
    28,538.48x = 621,962,835.80
  5. Step 5: Solve for x
    x = 621,962,835.80/28,538.48
  6. Step 6: Final answer
    x = 21,793.83

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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.