Home / 13,078.52-18,048.32-7,490.60

Finding the Fourth Proportional to 13,078.52, 18,048.32 and 7,490.60

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Solution

The fourth proportional to 13,078.52, 18,048.32 and 7,490.60 is: 10,337.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.52 : 18,048.32 = 7,490.60 : x
  2. Step 2: Convert to fraction form
    13,078.52/18,048.32 = 7,490.60/x
  3. Step 3: Cross multiply
    13,078.52x = 18,048.32 × 7,490.60
  4. Step 4: Simplify right side
    13,078.52x = 135,192,745.79
  5. Step 5: Solve for x
    x = 135,192,745.79/13,078.52
  6. Step 6: Final answer
    x = 10,337.01

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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.