Home / 12,911.60-19,362.48-5,519.48

Finding the Fourth Proportional to 12,911.60, 19,362.48 and 5,519.48

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Solution

The fourth proportional to 12,911.60, 19,362.48 and 5,519.48 is: 8,277.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.60 : 19,362.48 = 5,519.48 : x
  2. Step 2: Convert to fraction form
    12,911.60/19,362.48 = 5,519.48/x
  3. Step 3: Cross multiply
    12,911.60x = 19,362.48 × 5,519.48
  4. Step 4: Simplify right side
    12,911.60x = 106,870,821.11
  5. Step 5: Solve for x
    x = 106,870,821.11/12,911.60
  6. Step 6: Final answer
    x = 8,277.12

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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.