Home / 11,416.47-15,754.69-6,380.70

Finding the Fourth Proportional to 11,416.47, 15,754.69 and 6,380.70

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Solution

The fourth proportional to 11,416.47, 15,754.69 and 6,380.70 is: 8,805.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,416.47 : 15,754.69 = 6,380.70 : x
  2. Step 2: Convert to fraction form
    11,416.47/15,754.69 = 6,380.70/x
  3. Step 3: Cross multiply
    11,416.47x = 15,754.69 × 6,380.70
  4. Step 4: Simplify right side
    11,416.47x = 100,525,950.48
  5. Step 5: Solve for x
    x = 100,525,950.48/11,416.47
  6. Step 6: Final answer
    x = 8,805.34

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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.