Home / 13,185.34-19,785.79-4,871.24

Finding the Fourth Proportional to 13,185.34, 19,785.79 and 4,871.24

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Solution

The fourth proportional to 13,185.34, 19,785.79 and 4,871.24 is: 7,309.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.34 : 19,785.79 = 4,871.24 : x
  2. Step 2: Convert to fraction form
    13,185.34/19,785.79 = 4,871.24/x
  3. Step 3: Cross multiply
    13,185.34x = 19,785.79 × 4,871.24
  4. Step 4: Simplify right side
    13,185.34x = 96,381,331.68
  5. Step 5: Solve for x
    x = 96,381,331.68/13,185.34
  6. Step 6: Final answer
    x = 7,309.73

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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.