Home / 28,394.48-39,168.96-17,781.92

Finding the Fourth Proportional to 28,394.48, 39,168.96 and 17,781.92

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Solution

The fourth proportional to 28,394.48, 39,168.96 and 17,781.92 is: 24,529.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,394.48 : 39,168.96 = 17,781.92 : x
  2. Step 2: Convert to fraction form
    28,394.48/39,168.96 = 17,781.92/x
  3. Step 3: Cross multiply
    28,394.48x = 39,168.96 × 17,781.92
  4. Step 4: Simplify right side
    28,394.48x = 696,499,313.20
  5. Step 5: Solve for x
    x = 696,499,313.20/28,394.48
  6. Step 6: Final answer
    x = 24,529.39

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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.