Home / 11,420.15-15,757.79-6,382.76

Finding the Fourth Proportional to 11,420.15, 15,757.79 and 6,382.76

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Solution

The fourth proportional to 11,420.15, 15,757.79 and 6,382.76 is: 8,807.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.15 : 15,757.79 = 6,382.76 : x
  2. Step 2: Convert to fraction form
    11,420.15/15,757.79 = 6,382.76/x
  3. Step 3: Cross multiply
    11,420.15x = 15,757.79 × 6,382.76
  4. Step 4: Simplify right side
    11,420.15x = 100,578,081.00
  5. Step 5: Solve for x
    x = 100,578,081.00/11,420.15
  6. Step 6: Final answer
    x = 8,807.08

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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.