Home / 11,391.51-17,089.78-3,495.12

Finding the Fourth Proportional to 11,391.51, 17,089.78 and 3,495.12

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Solution

The fourth proportional to 11,391.51, 17,089.78 and 3,495.12 is: 5,243.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.51 : 17,089.78 = 3,495.12 : x
  2. Step 2: Convert to fraction form
    11,391.51/17,089.78 = 3,495.12/x
  3. Step 3: Cross multiply
    11,391.51x = 17,089.78 × 3,495.12
  4. Step 4: Simplify right side
    11,391.51x = 59,730,831.87
  5. Step 5: Solve for x
    x = 59,730,831.87/11,391.51
  6. Step 6: Final answer
    x = 5,243.45

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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.