Home / 18,859.12-28,245.60-9,005.36

Finding the Fourth Proportional to 18,859.12, 28,245.60 and 9,005.36

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Solution

The fourth proportional to 18,859.12, 28,245.60 and 9,005.36 is: 13,487.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859.12 : 28,245.60 = 9,005.36 : x
  2. Step 2: Convert to fraction form
    18,859.12/28,245.60 = 9,005.36/x
  3. Step 3: Cross multiply
    18,859.12x = 28,245.60 × 9,005.36
  4. Step 4: Simplify right side
    18,859.12x = 254,361,796.42
  5. Step 5: Solve for x
    x = 254,361,796.42/18,859.12
  6. Step 6: Final answer
    x = 13,487.47

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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.