Home / 12,438.72-17,164.80-6,848.64

Finding the Fourth Proportional to 12,438.72, 17,164.80 and 6,848.64

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Solution

The fourth proportional to 12,438.72, 17,164.80 and 6,848.64 is: 9,450.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.72 : 17,164.80 = 6,848.64 : x
  2. Step 2: Convert to fraction form
    12,438.72/17,164.80 = 6,848.64/x
  3. Step 3: Cross multiply
    12,438.72x = 17,164.80 × 6,848.64
  4. Step 4: Simplify right side
    12,438.72x = 117,555,535.87
  5. Step 5: Solve for x
    x = 117,555,535.87/12,438.72
  6. Step 6: Final answer
    x = 9,450.77

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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.