Home / 21,166.92-31,750.79-7,124.36

Finding the Fourth Proportional to 21,166.92, 31,750.79 and 7,124.36

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Solution

The fourth proportional to 21,166.92, 31,750.79 and 7,124.36 is: 10,686.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,166.92 : 31,750.79 = 7,124.36 : x
  2. Step 2: Convert to fraction form
    21,166.92/31,750.79 = 7,124.36/x
  3. Step 3: Cross multiply
    21,166.92x = 31,750.79 × 7,124.36
  4. Step 4: Simplify right side
    21,166.92x = 226,203,863.87
  5. Step 5: Solve for x
    x = 226,203,863.87/21,166.92
  6. Step 6: Final answer
    x = 10,686.67

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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.