Home / 21,571.24-29,768.24-12,139.82

Finding the Fourth Proportional to 21,571.24, 29,768.24 and 12,139.82

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Solution

The fourth proportional to 21,571.24, 29,768.24 and 12,139.82 is: 16,752.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.24 : 29,768.24 = 12,139.82 : x
  2. Step 2: Convert to fraction form
    21,571.24/29,768.24 = 12,139.82/x
  3. Step 3: Cross multiply
    21,571.24x = 29,768.24 × 12,139.82
  4. Step 4: Simplify right side
    21,571.24x = 361,381,075.32
  5. Step 5: Solve for x
    x = 361,381,075.32/21,571.24
  6. Step 6: Final answer
    x = 16,752.91

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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.