Home / 11,383.32-15,708.38-6,415

Finding the Fourth Proportional to 11,383.32, 15,708.38 and 6,415

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Solution

The fourth proportional to 11,383.32, 15,708.38 and 6,415 is: 8,852.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,383.32 : 15,708.38 = 6,415 : x
  2. Step 2: Convert to fraction form
    11,383.32/15,708.38 = 6,415/x
  3. Step 3: Cross multiply
    11,383.32x = 15,708.38 × 6,415
  4. Step 4: Simplify right side
    11,383.32x = 100,769,257.70
  5. Step 5: Solve for x
    x = 100,769,257.70/11,383.32
  6. Step 6: Final answer
    x = 8,852.36

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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.