Home / 13,775.86-19,012.53-8,187.22

Finding the Fourth Proportional to 13,775.86, 19,012.53 and 8,187.22

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Solution

The fourth proportional to 13,775.86, 19,012.53 and 8,187.22 is: 11,299.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.86 : 19,012.53 = 8,187.22 : x
  2. Step 2: Convert to fraction form
    13,775.86/19,012.53 = 8,187.22/x
  3. Step 3: Cross multiply
    13,775.86x = 19,012.53 × 8,187.22
  4. Step 4: Simplify right side
    13,775.86x = 155,659,765.87
  5. Step 5: Solve for x
    x = 155,659,765.87/13,775.86
  6. Step 6: Final answer
    x = 11,299.46

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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.