Home / 13,561.66-18,709.38-9,086.86

Finding the Fourth Proportional to 13,561.66, 18,709.38 and 9,086.86

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Solution

The fourth proportional to 13,561.66, 18,709.38 and 9,086.86 is: 12,536.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.66 : 18,709.38 = 9,086.86 : x
  2. Step 2: Convert to fraction form
    13,561.66/18,709.38 = 9,086.86/x
  3. Step 3: Cross multiply
    13,561.66x = 18,709.38 × 9,086.86
  4. Step 4: Simplify right side
    13,561.66x = 170,009,516.75
  5. Step 5: Solve for x
    x = 170,009,516.75/13,561.66
  6. Step 6: Final answer
    x = 12,536.04

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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.