Home / 21,544.99-29,722.94-13,156.63

Finding the Fourth Proportional to 21,544.99, 29,722.94 and 13,156.63

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Solution

The fourth proportional to 21,544.99, 29,722.94 and 13,156.63 is: 18,150.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,544.99 : 29,722.94 = 13,156.63 : x
  2. Step 2: Convert to fraction form
    21,544.99/29,722.94 = 13,156.63/x
  3. Step 3: Cross multiply
    21,544.99x = 29,722.94 × 13,156.63
  4. Step 4: Simplify right side
    21,544.99x = 391,053,724.09
  5. Step 5: Solve for x
    x = 391,053,724.09/21,544.99
  6. Step 6: Final answer
    x = 18,150.56

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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.