Home / 12,427.52-18,738.88-11,394.40

Finding the Fourth Proportional to 12,427.52, 18,738.88 and 11,394.40

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Solution

The fourth proportional to 12,427.52, 18,738.88 and 11,394.40 is: 17,181.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.52 : 18,738.88 = 11,394.40 : x
  2. Step 2: Convert to fraction form
    12,427.52/18,738.88 = 11,394.40/x
  3. Step 3: Cross multiply
    12,427.52x = 18,738.88 × 11,394.40
  4. Step 4: Simplify right side
    12,427.52x = 213,518,294.27
  5. Step 5: Solve for x
    x = 213,518,294.27/12,427.52
  6. Step 6: Final answer
    x = 17,181.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.