Home / 13,137.46-18,128.21-7,550.26

Finding the Fourth Proportional to 13,137.46, 18,128.21 and 7,550.26

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Solution

The fourth proportional to 13,137.46, 18,128.21 and 7,550.26 is: 10,418.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.46 : 18,128.21 = 7,550.26 : x
  2. Step 2: Convert to fraction form
    13,137.46/18,128.21 = 7,550.26/x
  3. Step 3: Cross multiply
    13,137.46x = 18,128.21 × 7,550.26
  4. Step 4: Simplify right side
    13,137.46x = 136,872,698.83
  5. Step 5: Solve for x
    x = 136,872,698.83/13,137.46
  6. Step 6: Final answer
    x = 10,418.51

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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.