Home / 10,921.51-16,382.81-3,995.47

Finding the Fourth Proportional to 10,921.51, 16,382.81 and 3,995.47

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Solution

The fourth proportional to 10,921.51, 16,382.81 and 3,995.47 is: 5,993.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.51 : 16,382.81 = 3,995.47 : x
  2. Step 2: Convert to fraction form
    10,921.51/16,382.81 = 3,995.47/x
  3. Step 3: Cross multiply
    10,921.51x = 16,382.81 × 3,995.47
  4. Step 4: Simplify right side
    10,921.51x = 65,457,025.87
  5. Step 5: Solve for x
    x = 65,457,025.87/10,921.51
  6. Step 6: Final answer
    x = 5,993.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.