Home / 21,529.53-29,694.24-15,580.89

Finding the Fourth Proportional to 21,529.53, 29,694.24 and 15,580.89

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Solution

The fourth proportional to 21,529.53, 29,694.24 and 15,580.89 is: 21,489.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,529.53 : 29,694.24 = 15,580.89 : x
  2. Step 2: Convert to fraction form
    21,529.53/29,694.24 = 15,580.89/x
  3. Step 3: Cross multiply
    21,529.53x = 29,694.24 × 15,580.89
  4. Step 4: Simplify right side
    21,529.53x = 462,662,687.07
  5. Step 5: Solve for x
    x = 462,662,687.07/21,529.53
  6. Step 6: Final answer
    x = 21,489.68

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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.