Home / 13,530.10-18,659.45-8,494.79

Finding the Fourth Proportional to 13,530.10, 18,659.45 and 8,494.79

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Solution

The fourth proportional to 13,530.10, 18,659.45 and 8,494.79 is: 11,715.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.10 : 18,659.45 = 8,494.79 : x
  2. Step 2: Convert to fraction form
    13,530.10/18,659.45 = 8,494.79/x
  3. Step 3: Cross multiply
    13,530.10x = 18,659.45 × 8,494.79
  4. Step 4: Simplify right side
    13,530.10x = 158,508,109.27
  5. Step 5: Solve for x
    x = 158,508,109.27/13,530.10
  6. Step 6: Final answer
    x = 11,715.22

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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.