Home / 13,329.36-18,391.32-8,612.88

Finding the Fourth Proportional to 13,329.36, 18,391.32 and 8,612.88

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Solution

The fourth proportional to 13,329.36, 18,391.32 and 8,612.88 is: 11,883.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,329.36 : 18,391.32 = 8,612.88 : x
  2. Step 2: Convert to fraction form
    13,329.36/18,391.32 = 8,612.88/x
  3. Step 3: Cross multiply
    13,329.36x = 18,391.32 × 8,612.88
  4. Step 4: Simplify right side
    13,329.36x = 158,402,232.20
  5. Step 5: Solve for x
    x = 158,402,232.20/13,329.36
  6. Step 6: Final answer
    x = 11,883.71

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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.