Home / 13,221.29-18,245.77-7,253.35

Finding the Fourth Proportional to 13,221.29, 18,245.77 and 7,253.35

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Solution

The fourth proportional to 13,221.29, 18,245.77 and 7,253.35 is: 10,009.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.29 : 18,245.77 = 7,253.35 : x
  2. Step 2: Convert to fraction form
    13,221.29/18,245.77 = 7,253.35/x
  3. Step 3: Cross multiply
    13,221.29x = 18,245.77 × 7,253.35
  4. Step 4: Simplify right side
    13,221.29x = 132,342,892.08
  5. Step 5: Solve for x
    x = 132,342,892.08/13,221.29
  6. Step 6: Final answer
    x = 10,009.83

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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.