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Finding the Fourth Proportional to 21,151.77, 29,192.50 and 12,197.49

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Solution

The fourth proportional to 21,151.77, 29,192.50 and 12,197.49 is: 16,834.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.77 : 29,192.50 = 12,197.49 : x
  2. Step 2: Convert to fraction form
    21,151.77/29,192.50 = 12,197.49/x
  3. Step 3: Cross multiply
    21,151.77x = 29,192.50 × 12,197.49
  4. Step 4: Simplify right side
    21,151.77x = 356,075,226.83
  5. Step 5: Solve for x
    x = 356,075,226.83/21,151.77
  6. Step 6: Final answer
    x = 16,834.30

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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.