Home / 12,372.72-17,074.40-6,783.76

Finding the Fourth Proportional to 12,372.72, 17,074.40 and 6,783.76

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Solution

The fourth proportional to 12,372.72, 17,074.40 and 6,783.76 is: 9,361.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,372.72 : 17,074.40 = 6,783.76 : x
  2. Step 2: Convert to fraction form
    12,372.72/17,074.40 = 6,783.76/x
  3. Step 3: Cross multiply
    12,372.72x = 17,074.40 × 6,783.76
  4. Step 4: Simplify right side
    12,372.72x = 115,828,631.74
  5. Step 5: Solve for x
    x = 115,828,631.74/12,372.72
  6. Step 6: Final answer
    x = 9,361.61

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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.