Home / 21,935.61-32,906.66-7,139.75

Finding the Fourth Proportional to 21,935.61, 32,906.66 and 7,139.75

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Solution

The fourth proportional to 21,935.61, 32,906.66 and 7,139.75 is: 10,710.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935.61 : 32,906.66 = 7,139.75 : x
  2. Step 2: Convert to fraction form
    21,935.61/32,906.66 = 7,139.75/x
  3. Step 3: Cross multiply
    21,935.61x = 32,906.66 × 7,139.75
  4. Step 4: Simplify right side
    21,935.61x = 234,945,125.50
  5. Step 5: Solve for x
    x = 234,945,125.50/21,935.61
  6. Step 6: Final answer
    x = 10,710.67

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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.