Home / 13,433.05-18,539.54-8,055.78

Finding the Fourth Proportional to 13,433.05, 18,539.54 and 8,055.78

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Solution

The fourth proportional to 13,433.05, 18,539.54 and 8,055.78 is: 11,118.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,433.05 : 18,539.54 = 8,055.78 : x
  2. Step 2: Convert to fraction form
    13,433.05/18,539.54 = 8,055.78/x
  3. Step 3: Cross multiply
    13,433.05x = 18,539.54 × 8,055.78
  4. Step 4: Simplify right side
    13,433.05x = 149,350,455.54
  5. Step 5: Solve for x
    x = 149,350,455.54/13,433.05
  6. Step 6: Final answer
    x = 11,118.13

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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.