Home / 21,215.37-31,827.61-7,174.70

Finding the Fourth Proportional to 21,215.37, 31,827.61 and 7,174.70

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Solution

The fourth proportional to 21,215.37, 31,827.61 and 7,174.70 is: 10,763.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215.37 : 31,827.61 = 7,174.70 : x
  2. Step 2: Convert to fraction form
    21,215.37/31,827.61 = 7,174.70/x
  3. Step 3: Cross multiply
    21,215.37x = 31,827.61 × 7,174.70
  4. Step 4: Simplify right side
    21,215.37x = 228,353,591.99
  5. Step 5: Solve for x
    x = 228,353,591.99/21,215.37
  6. Step 6: Final answer
    x = 10,763.59

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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.