Home / 11,845.40-17,744.70-7,688.30

Finding the Fourth Proportional to 11,845.40, 17,744.70 and 7,688.30

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Solution

The fourth proportional to 11,845.40, 17,744.70 and 7,688.30 is: 11,517.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,845.40 : 17,744.70 = 7,688.30 : x
  2. Step 2: Convert to fraction form
    11,845.40/17,744.70 = 7,688.30/x
  3. Step 3: Cross multiply
    11,845.40x = 17,744.70 × 7,688.30
  4. Step 4: Simplify right side
    11,845.40x = 136,426,577.01
  5. Step 5: Solve for x
    x = 136,426,577.01/11,845.40
  6. Step 6: Final answer
    x = 11,517.26

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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.