Home / 28,919.89-43,390.63-11,401.93

Finding the Fourth Proportional to 28,919.89, 43,390.63 and 11,401.93

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Solution

The fourth proportional to 28,919.89, 43,390.63 and 11,401.93 is: 17,107.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.89 : 43,390.63 = 11,401.93 : x
  2. Step 2: Convert to fraction form
    28,919.89/43,390.63 = 11,401.93/x
  3. Step 3: Cross multiply
    28,919.89x = 43,390.63 × 11,401.93
  4. Step 4: Simplify right side
    28,919.89x = 494,736,831.69
  5. Step 5: Solve for x
    x = 494,736,831.69/28,919.89
  6. Step 6: Final answer
    x = 17,107.15

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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.