Home / 10,422.28-14,383.20-6,440.32

Finding the Fourth Proportional to 10,422.28, 14,383.20 and 6,440.32

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Solution

The fourth proportional to 10,422.28, 14,383.20 and 6,440.32 is: 8,887.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,422.28 : 14,383.20 = 6,440.32 : x
  2. Step 2: Convert to fraction form
    10,422.28/14,383.20 = 6,440.32/x
  3. Step 3: Cross multiply
    10,422.28x = 14,383.20 × 6,440.32
  4. Step 4: Simplify right side
    10,422.28x = 92,632,410.62
  5. Step 5: Solve for x
    x = 92,632,410.62/10,422.28
  6. Step 6: Final answer
    x = 8,887.92

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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.