Home / 12,670.56-19,005.78-3,785.97

Finding the Fourth Proportional to 12,670.56, 19,005.78 and 3,785.97

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Solution

The fourth proportional to 12,670.56, 19,005.78 and 3,785.97 is: 5,678.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,670.56 : 19,005.78 = 3,785.97 : x
  2. Step 2: Convert to fraction form
    12,670.56/19,005.78 = 3,785.97/x
  3. Step 3: Cross multiply
    12,670.56x = 19,005.78 × 3,785.97
  4. Step 4: Simplify right side
    12,670.56x = 71,955,312.91
  5. Step 5: Solve for x
    x = 71,955,312.91/12,670.56
  6. Step 6: Final answer
    x = 5,678.94

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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.