Home / 21,320.82-31,981.05-7,282.26

Finding the Fourth Proportional to 21,320.82, 31,981.05 and 7,282.26

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Solution

The fourth proportional to 21,320.82, 31,981.05 and 7,282.26 is: 10,923.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.82 : 31,981.05 = 7,282.26 : x
  2. Step 2: Convert to fraction form
    21,320.82/31,981.05 = 7,282.26/x
  3. Step 3: Cross multiply
    21,320.82x = 31,981.05 × 7,282.26
  4. Step 4: Simplify right side
    21,320.82x = 232,894,321.17
  5. Step 5: Solve for x
    x = 232,894,321.17/21,320.82
  6. Step 6: Final answer
    x = 10,923.33

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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.