Home / 13,550.35-18,699.76-8,172.76

Finding the Fourth Proportional to 13,550.35, 18,699.76 and 8,172.76

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Solution

The fourth proportional to 13,550.35, 18,699.76 and 8,172.76 is: 11,278.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.35 : 18,699.76 = 8,172.76 : x
  2. Step 2: Convert to fraction form
    13,550.35/18,699.76 = 8,172.76/x
  3. Step 3: Cross multiply
    13,550.35x = 18,699.76 × 8,172.76
  4. Step 4: Simplify right side
    13,550.35x = 152,828,650.54
  5. Step 5: Solve for x
    x = 152,828,650.54/13,550.35
  6. Step 6: Final answer
    x = 11,278.58

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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.