Home / 21,271.84-29,355.79-11,581.94

Finding the Fourth Proportional to 21,271.84, 29,355.79 and 11,581.94

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Solution

The fourth proportional to 21,271.84, 29,355.79 and 11,581.94 is: 15,983.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.84 : 29,355.79 = 11,581.94 : x
  2. Step 2: Convert to fraction form
    21,271.84/29,355.79 = 11,581.94/x
  3. Step 3: Cross multiply
    21,271.84x = 29,355.79 × 11,581.94
  4. Step 4: Simplify right side
    21,271.84x = 339,996,932.03
  5. Step 5: Solve for x
    x = 339,996,932.03/21,271.84
  6. Step 6: Final answer
    x = 15,983.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.