Home / 18,518.32-27,742.58-9,147.36

Finding the Fourth Proportional to 18,518.32, 27,742.58 and 9,147.36

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Solution

The fourth proportional to 18,518.32, 27,742.58 and 9,147.36 is: 13,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.32 : 27,742.58 = 9,147.36 : x
  2. Step 2: Convert to fraction form
    18,518.32/27,742.58 = 9,147.36/x
  3. Step 3: Cross multiply
    18,518.32x = 27,742.58 × 9,147.36
  4. Step 4: Simplify right side
    18,518.32x = 253,771,366.59
  5. Step 5: Solve for x
    x = 253,771,366.59/18,518.32
  6. Step 6: Final answer
    x = 13,703.80

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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.