Home / 21,320.73-31,981.18-6,529.59

Finding the Fourth Proportional to 21,320.73, 31,981.18 and 6,529.59

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Solution

The fourth proportional to 21,320.73, 31,981.18 and 6,529.59 is: 9,794.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.73 : 31,981.18 = 6,529.59 : x
  2. Step 2: Convert to fraction form
    21,320.73/31,981.18 = 6,529.59/x
  3. Step 3: Cross multiply
    21,320.73x = 31,981.18 × 6,529.59
  4. Step 4: Simplify right side
    21,320.73x = 208,823,993.12
  5. Step 5: Solve for x
    x = 208,823,993.12/21,320.73
  6. Step 6: Final answer
    x = 9,794.41

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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.