Home / 11,109.45-15,332.39-6,393.63

Finding the Fourth Proportional to 11,109.45, 15,332.39 and 6,393.63

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Solution

The fourth proportional to 11,109.45, 15,332.39 and 6,393.63 is: 8,823.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,109.45 : 15,332.39 = 6,393.63 : x
  2. Step 2: Convert to fraction form
    11,109.45/15,332.39 = 6,393.63/x
  3. Step 3: Cross multiply
    11,109.45x = 15,332.39 × 6,393.63
  4. Step 4: Simplify right side
    11,109.45x = 98,029,628.68
  5. Step 5: Solve for x
    x = 98,029,628.68/11,109.45
  6. Step 6: Final answer
    x = 8,823.99

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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.