Home / 13,170.88-18,170.34-8,632.32

Finding the Fourth Proportional to 13,170.88, 18,170.34 and 8,632.32

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Solution

The fourth proportional to 13,170.88, 18,170.34 and 8,632.32 is: 11,909.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.88 : 18,170.34 = 8,632.32 : x
  2. Step 2: Convert to fraction form
    13,170.88/18,170.34 = 8,632.32/x
  3. Step 3: Cross multiply
    13,170.88x = 18,170.34 × 8,632.32
  4. Step 4: Simplify right side
    13,170.88x = 156,852,189.39
  5. Step 5: Solve for x
    x = 156,852,189.39/13,170.88
  6. Step 6: Final answer
    x = 11,909.01

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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.