Home / 13,108.64-18,091.38-8,071.86

Finding the Fourth Proportional to 13,108.64, 18,091.38 and 8,071.86

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Solution

The fourth proportional to 13,108.64, 18,091.38 and 8,071.86 is: 11,140.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,108.64 : 18,091.38 = 8,071.86 : x
  2. Step 2: Convert to fraction form
    13,108.64/18,091.38 = 8,071.86/x
  3. Step 3: Cross multiply
    13,108.64x = 18,091.38 × 8,071.86
  4. Step 4: Simplify right side
    13,108.64x = 146,031,086.57
  5. Step 5: Solve for x
    x = 146,031,086.57/13,108.64
  6. Step 6: Final answer
    x = 11,140.06

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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.