Home / 12,743.37-17,585.91-7,078.23

Finding the Fourth Proportional to 12,743.37, 17,585.91 and 7,078.23

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Solution

The fourth proportional to 12,743.37, 17,585.91 and 7,078.23 is: 9,767.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.37 : 17,585.91 = 7,078.23 : x
  2. Step 2: Convert to fraction form
    12,743.37/17,585.91 = 7,078.23/x
  3. Step 3: Cross multiply
    12,743.37x = 17,585.91 × 7,078.23
  4. Step 4: Simplify right side
    12,743.37x = 124,477,115.74
  5. Step 5: Solve for x
    x = 124,477,115.74/12,743.37
  6. Step 6: Final answer
    x = 9,767.99

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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.