Home / 11,724.74-16,180.32-6,420.05

Finding the Fourth Proportional to 11,724.74, 16,180.32 and 6,420.05

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Solution

The fourth proportional to 11,724.74, 16,180.32 and 6,420.05 is: 8,859.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,724.74 : 16,180.32 = 6,420.05 : x
  2. Step 2: Convert to fraction form
    11,724.74/16,180.32 = 6,420.05/x
  3. Step 3: Cross multiply
    11,724.74x = 16,180.32 × 6,420.05
  4. Step 4: Simplify right side
    11,724.74x = 103,878,382.51
  5. Step 5: Solve for x
    x = 103,878,382.51/11,724.74
  6. Step 6: Final answer
    x = 8,859.76

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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.