Home / 11,555.48-15,940.92-7,574.84

Finding the Fourth Proportional to 11,555.48, 15,940.92 and 7,574.84

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Solution

The fourth proportional to 11,555.48, 15,940.92 and 7,574.84 is: 10,449.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.48 : 15,940.92 = 7,574.84 : x
  2. Step 2: Convert to fraction form
    11,555.48/15,940.92 = 7,574.84/x
  3. Step 3: Cross multiply
    11,555.48x = 15,940.92 × 7,574.84
  4. Step 4: Simplify right side
    11,555.48x = 120,749,918.45
  5. Step 5: Solve for x
    x = 120,749,918.45/11,555.48
  6. Step 6: Final answer
    x = 10,449.58

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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.