Home / 12,869.56-19,309.74-5,475.61

Finding the Fourth Proportional to 12,869.56, 19,309.74 and 5,475.61

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Solution

The fourth proportional to 12,869.56, 19,309.74 and 5,475.61 is: 8,215.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.56 : 19,309.74 = 5,475.61 : x
  2. Step 2: Convert to fraction form
    12,869.56/19,309.74 = 5,475.61/x
  3. Step 3: Cross multiply
    12,869.56x = 19,309.74 × 5,475.61
  4. Step 4: Simplify right side
    12,869.56x = 105,732,605.44
  5. Step 5: Solve for x
    x = 105,732,605.44/12,869.56
  6. Step 6: Final answer
    x = 8,215.71

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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.