Home / 20,137.05-27,803.01-12,586.77

Finding the Fourth Proportional to 20,137.05, 27,803.01 and 12,586.77

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Solution

The fourth proportional to 20,137.05, 27,803.01 and 12,586.77 is: 17,378.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.05 : 27,803.01 = 12,586.77 : x
  2. Step 2: Convert to fraction form
    20,137.05/27,803.01 = 12,586.77/x
  3. Step 3: Cross multiply
    20,137.05x = 27,803.01 × 12,586.77
  4. Step 4: Simplify right side
    20,137.05x = 349,950,092.18
  5. Step 5: Solve for x
    x = 349,950,092.18/20,137.05
  6. Step 6: Final answer
    x = 17,378.42

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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.