Home / 13,207.49-18,226.58-7,239.12

Finding the Fourth Proportional to 13,207.49, 18,226.58 and 7,239.12

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Solution

The fourth proportional to 13,207.49, 18,226.58 and 7,239.12 is: 9,990.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.49 : 18,226.58 = 7,239.12 : x
  2. Step 2: Convert to fraction form
    13,207.49/18,226.58 = 7,239.12/x
  3. Step 3: Cross multiply
    13,207.49x = 18,226.58 × 7,239.12
  4. Step 4: Simplify right side
    13,207.49x = 131,944,308.68
  5. Step 5: Solve for x
    x = 131,944,308.68/13,207.49
  6. Step 6: Final answer
    x = 9,990.11

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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.