Home / 18,508.64-25,550.10-12,135.36

Finding the Fourth Proportional to 18,508.64, 25,550.10 and 12,135.36

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Solution

The fourth proportional to 18,508.64, 25,550.10 and 12,135.36 is: 16,752.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,508.64 : 25,550.10 = 12,135.36 : x
  2. Step 2: Convert to fraction form
    18,508.64/25,550.10 = 12,135.36/x
  3. Step 3: Cross multiply
    18,508.64x = 25,550.10 × 12,135.36
  4. Step 4: Simplify right side
    18,508.64x = 310,059,661.54
  5. Step 5: Solve for x
    x = 310,059,661.54/18,508.64
  6. Step 6: Final answer
    x = 16,752.16

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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.