Home / 12,789.56-19,186.95-5,394.01

Finding the Fourth Proportional to 12,789.56, 19,186.95 and 5,394.01

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Solution

The fourth proportional to 12,789.56, 19,186.95 and 5,394.01 is: 8,092.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.56 : 19,186.95 = 5,394.01 : x
  2. Step 2: Convert to fraction form
    12,789.56/19,186.95 = 5,394.01/x
  3. Step 3: Cross multiply
    12,789.56x = 19,186.95 × 5,394.01
  4. Step 4: Simplify right side
    12,789.56x = 103,494,504.23
  5. Step 5: Solve for x
    x = 103,494,504.23/12,789.56
  6. Step 6: Final answer
    x = 8,092.11

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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.