Home / 12,438.15-17,164.62-6,772.81

Finding the Fourth Proportional to 12,438.15, 17,164.62 and 6,772.81

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Solution

The fourth proportional to 12,438.15, 17,164.62 and 6,772.81 is: 9,346.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.15 : 17,164.62 = 6,772.81 : x
  2. Step 2: Convert to fraction form
    12,438.15/17,164.62 = 6,772.81/x
  3. Step 3: Cross multiply
    12,438.15x = 17,164.62 × 6,772.81
  4. Step 4: Simplify right side
    12,438.15x = 116,252,709.98
  5. Step 5: Solve for x
    x = 116,252,709.98/12,438.15
  6. Step 6: Final answer
    x = 9,346.46

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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.