Home / 12,361.04-18,529.08-5,429.84

Finding the Fourth Proportional to 12,361.04, 18,529.08 and 5,429.84

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Solution

The fourth proportional to 12,361.04, 18,529.08 and 5,429.84 is: 8,139.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,361.04 : 18,529.08 = 5,429.84 : x
  2. Step 2: Convert to fraction form
    12,361.04/18,529.08 = 5,429.84/x
  3. Step 3: Cross multiply
    12,361.04x = 18,529.08 × 5,429.84
  4. Step 4: Simplify right side
    12,361.04x = 100,609,939.75
  5. Step 5: Solve for x
    x = 100,609,939.75/12,361.04
  6. Step 6: Final answer
    x = 8,139.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.