Home / 15,912.94-21,960.48-10,887.70

Finding the Fourth Proportional to 15,912.94, 21,960.48 and 10,887.70

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Solution

The fourth proportional to 15,912.94, 21,960.48 and 10,887.70 is: 15,025.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.94 : 21,960.48 = 10,887.70 : x
  2. Step 2: Convert to fraction form
    15,912.94/21,960.48 = 10,887.70/x
  3. Step 3: Cross multiply
    15,912.94x = 21,960.48 × 10,887.70
  4. Step 4: Simplify right side
    15,912.94x = 239,099,118.10
  5. Step 5: Solve for x
    x = 239,099,118.10/15,912.94
  6. Step 6: Final answer
    x = 15,025.45

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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.