Home / 20,953.62-31,401.81-11,579.76

Finding the Fourth Proportional to 20,953.62, 31,401.81 and 11,579.76

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Solution

The fourth proportional to 20,953.62, 31,401.81 and 11,579.76 is: 17,353.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.62 : 31,401.81 = 11,579.76 : x
  2. Step 2: Convert to fraction form
    20,953.62/31,401.81 = 11,579.76/x
  3. Step 3: Cross multiply
    20,953.62x = 31,401.81 × 11,579.76
  4. Step 4: Simplify right side
    20,953.62x = 363,625,423.37
  5. Step 5: Solve for x
    x = 363,625,423.37/20,953.62
  6. Step 6: Final answer
    x = 17,353.82

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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.