Home / 21,529.10-29,710.32-11,838.73

Finding the Fourth Proportional to 21,529.10, 29,710.32 and 11,838.73

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Solution

The fourth proportional to 21,529.10, 29,710.32 and 11,838.73 is: 16,337.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,529.10 : 29,710.32 = 11,838.73 : x
  2. Step 2: Convert to fraction form
    21,529.10/29,710.32 = 11,838.73/x
  3. Step 3: Cross multiply
    21,529.10x = 29,710.32 × 11,838.73
  4. Step 4: Simplify right side
    21,529.10x = 351,732,382.42
  5. Step 5: Solve for x
    x = 351,732,382.42/21,529.10
  6. Step 6: Final answer
    x = 16,337.53

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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.