Home / 12,888.05-19,331.36-3,527.39

Finding the Fourth Proportional to 12,888.05, 19,331.36 and 3,527.39

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Solution

The fourth proportional to 12,888.05, 19,331.36 and 3,527.39 is: 5,290.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.05 : 19,331.36 = 3,527.39 : x
  2. Step 2: Convert to fraction form
    12,888.05/19,331.36 = 3,527.39/x
  3. Step 3: Cross multiply
    12,888.05x = 19,331.36 × 3,527.39
  4. Step 4: Simplify right side
    12,888.05x = 68,189,131.66
  5. Step 5: Solve for x
    x = 68,189,131.66/12,888.05
  6. Step 6: Final answer
    x = 5,290.88

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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.