Home / 11,426.20-17,139.30-7,489.60

Finding the Fourth Proportional to 11,426.20, 17,139.30 and 7,489.60

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Solution

The fourth proportional to 11,426.20, 17,139.30 and 7,489.60 is: 11,234.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.20 : 17,139.30 = 7,489.60 : x
  2. Step 2: Convert to fraction form
    11,426.20/17,139.30 = 7,489.60/x
  3. Step 3: Cross multiply
    11,426.20x = 17,139.30 × 7,489.60
  4. Step 4: Simplify right side
    11,426.20x = 128,366,501.28
  5. Step 5: Solve for x
    x = 128,366,501.28/11,426.20
  6. Step 6: Final answer
    x = 11,234.40

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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.