Home / 13,518.38-20,284.32-7,284.08

Finding the Fourth Proportional to 13,518.38, 20,284.32 and 7,284.08

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Solution

The fourth proportional to 13,518.38, 20,284.32 and 7,284.08 is: 10,929.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.38 : 20,284.32 = 7,284.08 : x
  2. Step 2: Convert to fraction form
    13,518.38/20,284.32 = 7,284.08/x
  3. Step 3: Cross multiply
    13,518.38x = 20,284.32 × 7,284.08
  4. Step 4: Simplify right side
    13,518.38x = 147,752,609.63
  5. Step 5: Solve for x
    x = 147,752,609.63/13,518.38
  6. Step 6: Final answer
    x = 10,929.76

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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.