Home / 13,208.07-18,227.15-7,239.77

Finding the Fourth Proportional to 13,208.07, 18,227.15 and 7,239.77

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Solution

The fourth proportional to 13,208.07, 18,227.15 and 7,239.77 is: 9,990.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.07 : 18,227.15 = 7,239.77 : x
  2. Step 2: Convert to fraction form
    13,208.07/18,227.15 = 7,239.77/x
  3. Step 3: Cross multiply
    13,208.07x = 18,227.15 × 7,239.77
  4. Step 4: Simplify right side
    13,208.07x = 131,960,246.42
  5. Step 5: Solve for x
    x = 131,960,246.42/13,208.07
  6. Step 6: Final answer
    x = 9,990.88

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Half scale
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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.