Home / 10,912.64-15,059.77-6,440.23

Finding the Fourth Proportional to 10,912.64, 15,059.77 and 6,440.23

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Solution

The fourth proportional to 10,912.64, 15,059.77 and 6,440.23 is: 8,887.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.64 : 15,059.77 = 6,440.23 : x
  2. Step 2: Convert to fraction form
    10,912.64/15,059.77 = 6,440.23/x
  3. Step 3: Cross multiply
    10,912.64x = 15,059.77 × 6,440.23
  4. Step 4: Simplify right side
    10,912.64x = 96,988,336.79
  5. Step 5: Solve for x
    x = 96,988,336.79/10,912.64
  6. Step 6: Final answer
    x = 8,887.71

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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.