Home / 29,137.77-40,209.13-16,391.20

Finding the Fourth Proportional to 29,137.77, 40,209.13 and 16,391.20

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Solution

The fourth proportional to 29,137.77, 40,209.13 and 16,391.20 is: 22,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,137.77 : 40,209.13 = 16,391.20 : x
  2. Step 2: Convert to fraction form
    29,137.77/40,209.13 = 16,391.20/x
  3. Step 3: Cross multiply
    29,137.77x = 40,209.13 × 16,391.20
  4. Step 4: Simplify right side
    29,137.77x = 659,075,891.66
  5. Step 5: Solve for x
    x = 659,075,891.66/29,137.77
  6. Step 6: Final answer
    x = 22,619.30

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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.