Home / 13,751.28-18,973.47-8,085.73

Finding the Fourth Proportional to 13,751.28, 18,973.47 and 8,085.73

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Solution

The fourth proportional to 13,751.28, 18,973.47 and 8,085.73 is: 11,156.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.28 : 18,973.47 = 8,085.73 : x
  2. Step 2: Convert to fraction form
    13,751.28/18,973.47 = 8,085.73/x
  3. Step 3: Cross multiply
    13,751.28x = 18,973.47 × 8,085.73
  4. Step 4: Simplify right side
    13,751.28x = 153,414,355.58
  5. Step 5: Solve for x
    x = 153,414,355.58/13,751.28
  6. Step 6: Final answer
    x = 11,156.37

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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.