Home / 21,251.26-31,881.21-7,401.34

Finding the Fourth Proportional to 21,251.26, 31,881.21 and 7,401.34

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Solution

The fourth proportional to 21,251.26, 31,881.21 and 7,401.34 is: 11,103.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.26 : 31,881.21 = 7,401.34 : x
  2. Step 2: Convert to fraction form
    21,251.26/31,881.21 = 7,401.34/x
  3. Step 3: Cross multiply
    21,251.26x = 31,881.21 × 7,401.34
  4. Step 4: Simplify right side
    21,251.26x = 235,963,674.82
  5. Step 5: Solve for x
    x = 235,963,674.82/21,251.26
  6. Step 6: Final answer
    x = 11,103.51

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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.