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Finding the Fourth Proportional to 15,101.25, 20,840.09 and 8,477.25

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Solution

The fourth proportional to 15,101.25, 20,840.09 and 8,477.25 is: 11,698.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.25 : 20,840.09 = 8,477.25 : x
  2. Step 2: Convert to fraction form
    15,101.25/20,840.09 = 8,477.25/x
  3. Step 3: Cross multiply
    15,101.25x = 20,840.09 × 8,477.25
  4. Step 4: Simplify right side
    15,101.25x = 176,666,610.57
  5. Step 5: Solve for x
    x = 176,666,610.57/15,101.25
  6. Step 6: Final answer
    x = 11,698.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.