Home / 12,663.14-18,999.77-5,272.70

Finding the Fourth Proportional to 12,663.14, 18,999.77 and 5,272.70

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Solution

The fourth proportional to 12,663.14, 18,999.77 and 5,272.70 is: 7,911.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663.14 : 18,999.77 = 5,272.70 : x
  2. Step 2: Convert to fraction form
    12,663.14/18,999.77 = 5,272.70/x
  3. Step 3: Cross multiply
    12,663.14x = 18,999.77 × 5,272.70
  4. Step 4: Simplify right side
    12,663.14x = 100,179,965.92
  5. Step 5: Solve for x
    x = 100,179,965.92/12,663.14
  6. Step 6: Final answer
    x = 7,911.15

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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.