Home / 13,417.15-20,125.79-7,866.60

Finding the Fourth Proportional to 13,417.15, 20,125.79 and 7,866.60

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Solution

The fourth proportional to 13,417.15, 20,125.79 and 7,866.60 is: 11,799.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.15 : 20,125.79 = 7,866.60 : x
  2. Step 2: Convert to fraction form
    13,417.15/20,125.79 = 7,866.60/x
  3. Step 3: Cross multiply
    13,417.15x = 20,125.79 × 7,866.60
  4. Step 4: Simplify right side
    13,417.15x = 158,321,469.63
  5. Step 5: Solve for x
    x = 158,321,469.63/13,417.15
  6. Step 6: Final answer
    x = 11,799.94

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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.