Home / 11,386.80-17,066.81-5,139.51

Finding the Fourth Proportional to 11,386.80, 17,066.81 and 5,139.51

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Solution

The fourth proportional to 11,386.80, 17,066.81 and 5,139.51 is: 7,703.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,386.80 : 17,066.81 = 5,139.51 : x
  2. Step 2: Convert to fraction form
    11,386.80/17,066.81 = 5,139.51/x
  3. Step 3: Cross multiply
    11,386.80x = 17,066.81 × 5,139.51
  4. Step 4: Simplify right side
    11,386.80x = 87,715,014.97
  5. Step 5: Solve for x
    x = 87,715,014.97/11,386.80
  6. Step 6: Final answer
    x = 7,703.22

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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.