Home / 11,842.40-17,740.20-7,685.30

Finding the Fourth Proportional to 11,842.40, 17,740.20 and 7,685.30

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Solution

The fourth proportional to 11,842.40, 17,740.20 and 7,685.30 is: 11,512.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,842.40 : 17,740.20 = 7,685.30 : x
  2. Step 2: Convert to fraction form
    11,842.40/17,740.20 = 7,685.30/x
  3. Step 3: Cross multiply
    11,842.40x = 17,740.20 × 7,685.30
  4. Step 4: Simplify right side
    11,842.40x = 136,338,759.06
  5. Step 5: Solve for x
    x = 136,338,759.06/11,842.40
  6. Step 6: Final answer
    x = 11,512.76

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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.