Home / 11,361.09-15,678.31-6,646.29

Finding the Fourth Proportional to 11,361.09, 15,678.31 and 6,646.29

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Solution

The fourth proportional to 11,361.09, 15,678.31 and 6,646.29 is: 9,171.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,361.09 : 15,678.31 = 6,646.29 : x
  2. Step 2: Convert to fraction form
    11,361.09/15,678.31 = 6,646.29/x
  3. Step 3: Cross multiply
    11,361.09x = 15,678.31 × 6,646.29
  4. Step 4: Simplify right side
    11,361.09x = 104,202,532.02
  5. Step 5: Solve for x
    x = 104,202,532.02/11,361.09
  6. Step 6: Final answer
    x = 9,171.88

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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.