Home / 13,133.36-18,118.32-8,651.36

Finding the Fourth Proportional to 13,133.36, 18,118.32 and 8,651.36

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Solution

The fourth proportional to 13,133.36, 18,118.32 and 8,651.36 is: 11,935.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.36 : 18,118.32 = 8,651.36 : x
  2. Step 2: Convert to fraction form
    13,133.36/18,118.32 = 8,651.36/x
  3. Step 3: Cross multiply
    13,133.36x = 18,118.32 × 8,651.36
  4. Step 4: Simplify right side
    13,133.36x = 156,748,108.92
  5. Step 5: Solve for x
    x = 156,748,108.92/13,133.36
  6. Step 6: Final answer
    x = 11,935.11

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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.