Home / 12,186.50-16,810.89-9,199.22

Finding the Fourth Proportional to 12,186.50, 16,810.89 and 9,199.22

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Solution

The fourth proportional to 12,186.50, 16,810.89 and 9,199.22 is: 12,690.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.50 : 16,810.89 = 9,199.22 : x
  2. Step 2: Convert to fraction form
    12,186.50/16,810.89 = 9,199.22/x
  3. Step 3: Cross multiply
    12,186.50x = 16,810.89 × 9,199.22
  4. Step 4: Simplify right side
    12,186.50x = 154,647,075.51
  5. Step 5: Solve for x
    x = 154,647,075.51/12,186.50
  6. Step 6: Final answer
    x = 12,690.03

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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.