Home / 13,162.60-19,739.10-5,261.80

Finding the Fourth Proportional to 13,162.60, 19,739.10 and 5,261.80

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Solution

The fourth proportional to 13,162.60, 19,739.10 and 5,261.80 is: 7,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,162.60 : 19,739.10 = 5,261.80 : x
  2. Step 2: Convert to fraction form
    13,162.60/19,739.10 = 5,261.80/x
  3. Step 3: Cross multiply
    13,162.60x = 19,739.10 × 5,261.80
  4. Step 4: Simplify right side
    13,162.60x = 103,863,196.38
  5. Step 5: Solve for x
    x = 103,863,196.38/13,162.60
  6. Step 6: Final answer
    x = 7,890.78

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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.