Home / 21,006.84-31,499.33-6,213.76

Finding the Fourth Proportional to 21,006.84, 31,499.33 and 6,213.76

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Solution

The fourth proportional to 21,006.84, 31,499.33 and 6,213.76 is: 9,317.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.84 : 31,499.33 = 6,213.76 : x
  2. Step 2: Convert to fraction form
    21,006.84/31,499.33 = 6,213.76/x
  3. Step 3: Cross multiply
    21,006.84x = 31,499.33 × 6,213.76
  4. Step 4: Simplify right side
    21,006.84x = 195,729,245.71
  5. Step 5: Solve for x
    x = 195,729,245.71/21,006.84
  6. Step 6: Final answer
    x = 9,317.41

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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.